This year in ESS, we will focus on global 21st century issues that threaten our beautiful planet. It will be the responsibility of this and future generations to find solutions to these problems through raising awareness, discovering new technology, rewarding innovation, and by passing legislation. This blog will reflect the voice of every earth and space science student in Ms. B's classes during the 2013-2014 school year.
Sunday, September 8, 2013
peer generated question
How is the universe constantly expanding if there is no edge?
If there is no edge the universe can keep expanding forever and become infinitely big, so without an edge (that we know of yet) it is safe for the universe to expand but if we find an edge then many theories about how the universe will end may come true. As long as there is no edge the universe can expand infinitely. http://curious.astro.cornell.edu/question.php?number=274
I agree with your analysis. Adding to yours, I think that if the universe expands to the edge and everything gets clumped together, than our galaxy run into a black hole or perhaps a neighboring galaxy, and thus destroying all human life as we know it.
The universe expending by the power of Gravity on the other planets, stars, and galaxies. Energy can expend without edge http://io9.com/5526583/if-the-universe-is-expanding-whats-it-expanding-into
If The Universe Is Expanding, What's It Expanding Into?. (n.d.). io9 - We come from the future.. Retrieved September 9, 2013, from http://io9.com/5526583/if-the-universe-is-expanding-whats-it-expanding-into
I think to say that the universe is expanding is to say there is an edge, otherwise it would not be able to get any bigger, because there were no edges to measure it by.http://en.wikipedia.org/wiki/Big_Bang
Scientists knows that universe is infinite, and we cannot say it's expending. Scientists assumed a center for universe, then they now see that the sides are going farther from the center. It shows that universe is expending. References Curious About Astronomy: What is the universe expanding into? (n.d.). Retrieved from http://curious.astro.cornell.edu/question.php?number=274
From my research I saw a couple of theories to this. One of them just states that the universe has an infinite amount of space and just doesn't have an edge to it. And others say that there actually might be something outside of this universe that everything is expanding in to. But the theory about things outside this universe is impossible to prove because there is no way to observe anything outside this universe.
If there is no edge the universe can keep expanding forever and become infinitely big, so without an edge (that we know of yet) it is safe for the universe to expand but if we find an edge then many theories about how the universe will end may come true.
I think that the universe is expanding into nothing it is making space to expand into and as it is sphere it can do this, also if you try to reach the end you would probably never make it as the universe will always go faster than you but if you do make it to the end and then keep going you will go around and around the sphere and think you haven't reached the end. Ward, J. (n.d.). If the universe is expanding, what is it expanding into? | The Big Question. The Big Question | Site maintained by the British Association for the Advancement of Science. Retrieved September 9, 2013, from http://bigquestion.wordpress.com/2008/03/04/if-the-universe-is-expanding-what-is-it-expanding-into/
One key fact that essential to know before approaching this questions is the fact that the expansion of the universe is happening faster than the speed of light travels. With that being said, it technically isn't expanding, rather it is expanding because the amount of space, time, and matter, around us is increasing. Some say that the universe is infinite, while others say that there will come a time where the universe expands out too much and finally rip apart in the theory called "the Big Rip". Furthermore, no there doesn't have to be an edge to the universe. The common misconception is that the portion of where the universe is expanding is the end of space; however, it is only the end of the observable portion of the universe. Matter already fills all of space, so it is only a question of whether the universe can expand to fill that matter that exists.
"Brief Answers to Cosmic Questions." Brief Answers to Cosmic Questions. Harvard, n.d. Web. 09 Sept. 2013. .
It's really tough to figure out, as the universe doesn't seem to have an edge and it seems to be infinitely expanding. Since there isn't really an edge, the universe is going to infinitely expand. Since we don't live at the edge, we may never see an edge to the universe.
"Curious About Astronomy: What is the universe expanding into?." Curious About Astronomy? Ask an Astronomer. N.p., n.d. Web. 9 Sept. 2013.
How is the universe constantly expanding if there is no edge? The best way to describe the universe is that it's stretching and other galaxies far away from the Milky Way galaxy are stretching and getting bigger. There is no edge but instead things are just stretching.(http://curious.astro.cornell.edu/question.php?number=274)
This question is almost a contradiction, if the universe had edges then how would it constantly be expanding? Maybe the universe does have edges, the are just expanding also. http://curious.astro.cornell.edu/question.php?number=274
The universe is expanding despite having no edge because it's not that the universes is expanding into anything, the space between the galaxies of the universe is just stretching.
Rothstein, Dave. "Curious About Astronomy: What is the universe expanding into?." Curious About Astronomy? Ask an Astronomer. N.p., n.d. Web. 9 Sept. 2013. .
Scientist have not yet found if there is an edge to the universe because light isn't infinitely fast, because of this, scientist can only see as far as the light has reached in the universe. If there is an edge, scientist's theories on the end of the universe might hold true. The Edge of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/961202c.html
As of the current moment, astronomers and scientists have not found an end to the universe. Because of certain limitations, the edge, if there is any, can not be seen. With the amount of time it takes for light to reach us, it makes it even more difficult to search for the edge of the universe. The research done on the topic of expansion also gives the notion that the universe is expanding whether there seems to be an edge or not.
Brief Answers to Cosmic Questions. (n.d.). Center for Astrophysics. Retrieved September 9, 2013, from http://www.cfa.harvard.edu/seuforum/faq.h
Despite the fact the universe does not have an edge, it is constantly expanding. Even though scientists don't know how large the universe is, by observing objects in space (specifically the light they omit), they can assume the universe is growing larger. Vesto Slipher, for example, was able to prove this theory by studying nebulea in the Arizona sky. The nebula he was observing omitted an excess of red light, thus leading him to conclude that it was moving away from the earth. Because the earth is not special in the sense that it has repulsive properties, is the center of our solar system, etc, Slipher theorized that the universe, as a whole, was expanding. Others such as Edwin Hubble have found that Slipher's observations hold true for other objects in space. Therefore, despite the fact scientists have not discovered the edge of the universe, they can still assume the universe is expanding.
SDSS. (n.d.). The Universe. SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/proj/basic/universe
It is believed that the universe is infinite and there wouldn't be an edge if this was true. If there was an edge to the universe, then it wouldn't be constantly expanding, because it wouldn't have infinite room to expand.
Universe has no edge, no center. (2010, February 17). Universe at Sonoma State University. Retrieved September 9, 2013, from http://universe.sonoma.edu/activities/no_edges.html
Scientist have not yet found if there is an edge to the universe because light isn't infinitely fast, because of this, scientist can only see as far as the light has reached in the universe. If there is an edge, scientist's theories on the end of the universe might hold true. The Edge of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/961202c.html
The simplest way to look at these questions is the following: if the universe includes, by definition, everything,all of space, time, matter, energy,than there can be nothing outside of it (and hence no edge), nothing for it to expand into. Its true that this is contrary to our everyday experience, as is much else in physics and astronomy; but of course our everyday experience does not extend to the entire universe. "Expansion of the Universe." Expansion of the Universe. N.p., n.d. Web. 09 Sept. 2013.
The universe is constantly expanding because of dark matter. It is a matter that can not be seen, but it is powerful enough to push galaxies farther away from each other. http://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy/
Gravity is working against the expansion of the universe. If the density is large enough, the expansion of the universe would stop and the universe would collapse. If the density is small enough, the expansion would continue forever. The matter in our universe is at a certain density to where it will expand but never collapse.
"Expanding Universe." Hubble Law and the Expanding Universe. N.p., n.d. Web. 09 Sept. 2013.
The universe includes, by definition, everything -- all of space, time, matter, energy. Therefore, there can be nothing outside of it (and hence no edge.) Therefore nothing for it to expand into. If there were a higher-dimensional space in which the universe were embedded and into which it expands (like a two-dimensional balloon expanding into three-dimensional space), we could have no way of ever measuring the existence or characteristics of such a space. "Expansion of the Universe." Imagine The Universe! Home Page. N.p., n.d. Web. 9 Sept. 2013. <http://imagine.gsfc.nasa.gov/docs/ask_astro
The WMAP has stated and proved the existence of a dark energy that acts like an antigravity, which causes the universe to speed up its expansion
detecting., & background, m. t. (n.d.). WMAP- Life in the Universe. Wilkinson Microwave Anisotropy Probe (WMAP). Retrieved September 9, 2013, from http://map.gsfc.nasa.gov/universe/uni_life.html
There is no edge because space is made up of everything in space, time, matter, energy than there can be nothing outside of it (and hence no edge), nothing for it to expand into other then the universe keeps growing.
Expansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
Scientists have not found if there is an edge to the universe or not. But the sides of the universe are moving farther away from the center. Galaxies and stars are moving farther away from each other over time. Gravity is working against the expansion of the universe.
"Expanding Universe." Hubble Law and the Expanding Universe. N.p., n.d. Web. 09 Sept. 2013
Many scientist believe that the universe in no,t expanding into anything. Since there was no center from which the universe started, as the universe is expanding, there is no infinite into was the universe is expanding to.
Brief Answers to Cosmic Questions. (n.d.). Center for Astrophysics. Retrieved September 9, 2013, from http://www.cfa.harvard.edu/seuforum/faq.htm#e1 Big Bang: How Did the Universe Begin?. (n.d.). UGCS - Welcome to UGCS!. Retrieved September 9, 2013, from http://www.ugcs.caltech.edu/~yukimoon/BigBang/ The Expanding Universe. (n.d.). SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp The Universe. (n.d.). SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/proj/basic/universe/ scientists. (n.d.). THE BIG BANG . University of Michigan. Retrieved September 9, 2013, from http://www.umich.edu/~gs265/bigbang.htm ALL WEBSITES
Scientists aren't sure if there is an edge to the universe or not. But it is expanding because the space between the galaxies is stretching. Rothstein, Dave. "Curious About Astronomy: What is the universe expanding into?." Curious About Astronomy? Ask an Astronomer. N.p., n.d. Web. 9 Sept. 2013. .
Because the universe is infiniitely large, it will never cease to expand its "foreverness."
Curious About Astronomy: What is the universe expanding into?. (n.d.). Curious About Astronomy? Ask an Astronomer. Retrieved September 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
Due to the Big Bang there is room for endless expansion potential even if we have not discovered http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
Scientists have not yet discovered an edge to the universe but we know the universe is expanding because everything in the universe is moving farther and farther apart. Because there is no edge, that further explains how the universe can expand because there is so much space for it to expand to.
Rothstein, D. (n.d.). Curious About Astronomy . Retrieved from http://curious.astro.cornell.edu/question.php?number=274
the universe includes, by definition, everything(all of space, time, matter, energy) than there can be nothing outside of it (and hence no edge), nothing for it to expand into. Its true that this is contrary to our everyday experience, as is much else in physics and astronomy; but of course our everyday experience does not extend to the entire universe. References Expansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
In reality, ALL of space was filled with energy right from the beginning. There was no center to the expansion, and no magical point from which matter hurtled outward. The confusion arises in part because of the amazing conclusion that the OBSERVABLE portion of the universe was once packed into an incredibly tiny volume. But that primordial pellet of matter and energy was NOT surrounded by empty space... it was surrounded by more matter and energy (which today is beyond the region we can observe.) In fact, if the whole universe is infinitely large now, then it was always infinite, including during the Big Bang as well.
University, Harvard . " Brief Answers to Cosmic Questions." Center for Astrophysics. N.p., n.d. Web. 9 Sept. 2013. <
There is no edge because the universe is everything and nothing can exist outside of it. The universe as we know it is infinite and contains absolutely everything, and as it expands, there is still nothing outside of the universe.
Loewenstein, M., & Fredericks, A. (2001, October 21). Expansion of the Universe. Imagine The Universe!. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
If there is no edge then it would result in the expansion of the universe and could become infinite big. so technically without a edge it would be considered safe for the universe to expand. but scientists say if we do find a edge then theories about how the universe will come to a end may become true!
Curious About Astronomy: What is the universe expanding into? (n.d.). Retrieved from http://curious.astro.cornell.edu/question.php?number=274
Scientists' studies have no way of being able to see an "edge" scientifically although there are theories that space is expanding into different dimensions.
Universe: all of space, time, matter, energy. Then there can be nothing outside of it, no edge , nothing for it to expand into.
Expansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astroExpansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro
The universe itself is infinitely big. The spaces between galaxies has been stretching into greater distances, so the universe is expanding, it just isn't expanding into anything.
The universe can expand because of the fact that space between two points can grow. Therefore the edges shouldn't be an issue. This confuses me but makes sense to an extent.
&. (n.d.). ELI5: How is the universe constantly expanding when there is no edge? : explainlikeimfive. reddit: the front page of the internet. Retrieved September 9, 2013, from http://www.reddit.com/r/explainlikeimfive/comments/1k3g1h/eli5_how_is_the_universe_constantly_expanding/
The universe contains everything and has no edge. We do know that the universe is expanding at an infinite rate which limits the possibility of finding an edge or the boundary it is expanding towards.
"Expansion of the Universe." Imagine The Universe! Home Page. N.p., n.d. Web. 9 Sept. 2013. <http://imagine.gsfc.nasa.gov/docs/ask_astro
Since scientists can not find a definite edge on the universe there's no stopping point for the universe. The universe can expand forever since there's no edge. There is an infinite amount of space for the universe to expand into.
Britt Robert (10/10/12) does the universe have an edge? http://www.livescience.com/33646-universe-edge.html
If the universe is infinitely big, thenit isn't expanding into anything; instead, what is happening is that every region of the universe, every distance between every pair of galaxies, is being "stretched", but the overall size of the universe was infinitely big to begin with and continues to remain infinitely big as time goes on, so the universe's size doesn't change, and therefore it doesn't expand into anything. If, on the other hand, the universe has a finite size, then it may be legitimate to claim that there is something "outside of the universe" that the universe is expanding into. However, because we are, by definition, stuck within the space that makes up our universe and have no way to observe anything outside of it, this ceases to be a question that can be answered scientifically. So the answer in that case is that we really don't know what, if anything, the universe is expanding into.
Rothstein, D. (n.d.). Curious About Astronomy: What is the universe expanding into?. Curious About Astronomy? Ask an Astronomer. Retrieved September 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
"Expanding" isn't really the best word to describe what is happening to the universe, although that is the word that is often used - a word choice which I think leads to a lot of unnecessary confusion regarding what is already a difficult topic! A more accurate word for what the universe is doing might be "stretching".
The difference between "expanding" and "stretching", for me at least, is that an "expanding universe" conjures up an image where there is a bunch of galaxies floating through space, all of which started at some center point and are now moving away from that point at very fast speeds. Therefore, the collection of galaxies (which we call the "universe") is expanding, and it is certainly fair to ask what it is expanding into. It is stretching into free space.
Curious About Astronomy: What is the universe expanding into?. (n.d.). Curious About Astronomy? Ask an Astronomer. Retrieved September 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
You made an interesting point. I read an article that said to imagine the universe as a balloon with dots on it and the more air that is blown into it the farther the dots stretch apart. I like how you prefer to term "stretch" to expanding because it makes more sense.
We have not yet discovered an edge to the universe and there is so much space and no boundary so the universe just keeps on expanding. The Expanding Universe. (n.d.). SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp
As stated, "The space between two points grows. Literally the space between them. It's not expanding into anything, and therefore the edge of space never becomes an issue". http://www.reddit.com/r/explainlikeimfive/comments/1k3g1h/eli5_how_is_the_universe_constantly_expanding/
The universe is not expanding, it is the space between the objects growing further apart.
The universe includes, by definition, everything - all of space, time, matter, energy - therefore there can be nothing outside of it (and hence no edge), nothing for it to expand into. http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
The fact that the universe has no edge doesn't effect it's expansion. Because the universe is infinitely big, the spaces between galaxies are able to stretch larger and larger into the infinite space of the universe. In Curious About Astronomy?. Retrieved Sep. 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
Another way to look at it: if there were a higher-dimensional space in which the universe were embedded and into which it expands (like a two-dimensional balloon expanding into three-dimensional space)
Expansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
The area between the galaxies is growing further apart because the universe is infinite space. No edge will be discovered because there is no beginning and end to be found, it is just the space between the objects your looking at.
Speed of Universe's Expansion Measured Better Than Ever: Scientific American. (n.d.). Science News, Articles and Information | Scientific American. Retrieved September 9, 2013, from http://www.scientificamerican.com/article.cfm?id=speed-of-universes-expansion
Since the universe has no edge, it doe not affect its expansion. The universe has infinate ammount of space letting each galaxy expand as far as it needs to. http://curious.astro.cornell.edu/question.php?number=274
The universe contains everything: energy, forces, matter, etc. There is nothing beyond the universe, as far as we know, so there is no edge and no end to beyond space.
Expansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astr
There is no end to the universe, there is an unlimited amount of space so therefore there is no ending point where the universe will stop expanding. "NASA's Cosmicopia -- Ask Us - Space Physics - Cosmology - Expansion of the Universe." NASA's Cosmicopia -- Home. N.p., n.d. Web. 9 Sept. 2013. <http://helios.gsfc.nasa.gov/qa_sp_ex.html
The universe is constantly expanding and the fact that it doesn't have an edge doesn't affect it. The universe has an infinite amount of space so it can continue to expand. "What is the Universe Expanding Into?." Better Living Through Astronomy::DeepAstronomy.com. N.p., n.d. Web. 9 Sept. 2013. .
As far as we know the universe is expanding into nothing...When reading this article it says the most important property of space is the distance between two points. In fact, the distance measure defines space entirely. The evolution of the distance scale is governed by the amount of matter and energy in the universe, and as time passes, the scale increases and the distance between galaxies increases. If the universe is indeed infinite, then the simple answer to that is the universe doesn't have anything to expand into.
If the universe is infinitely big, then every distance between every pair of galaxies, is being "stretched", but the overall size of the universe was infinitely big to begin with and continues to remain infinitely big as time goes on, so the universe's size doesn't change, and therefore it doesn't expand into anything. http://uk.answers.yahoo.com/question/index?qid=20060928184748AAURFCt
By definition, the universe is a vast collection of ever expanding matter, space, time and energy.Because of the belief that the universe expanded from a single point, there can be no edge. It simply continue expanding, creating its own space all the time.
Web Link http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
The earth itself is not expanding. It is the space between planets that is expanding. We are slowly getting further and further from other planets. Space will continue to keep expanding
The universe really does not have an edge if you think in a 3 dimensional sense. While not entirely correct, you can imagine the universe as a expanding multidimensional balloon that has a 3 dimensional surface.
here are three possibilities of how the universe is expanding. One where it will just expand forever at a constant speed. Another theory where where the universe expands infinitely to zero and then stops expanding. And then there is the third way and that is when the universe expands until its highest point and then pulls back in at the same rate it expanded at and the galaxies collide.
The Expanding Universe. (n.d.). SDSS SkyServer. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp
We don't no how fast the universe is expanding but we no it is and it is expanding fast. There is a really big amount of space out there that we don't no about but it has all the room to expand http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
As of today, there is no edge that we know of. With that being said, the universe will keep expanding until it reaches the edge. This could go on for who knows long. There is lots of empty space left for our universe to expand into.
The universe is made up of empty space and entirely we don't know if there ever will be an edge
ReplyDeletehttp://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
DeleteThe very fact it is expanding means it cannot be infinite. I believe the Universe is evolving and there is no space/matter around it.
ReplyDeletehttp://bigquestion.wordpress.com/2008/03/04/if-the-universe-is-expanding-what-is-it-expanding-into/
DeleteThe Big Bang caused an indefinite and endless expansion of the universe despite it not having any already discovered edges.
ReplyDeleteVery true!
DeleteIf there is no edge the universe can keep expanding forever and become infinitely big, so without an edge (that we know of yet) it is safe for the universe to expand but if we find an edge then many theories about how the universe will end may come true. As long as there is no edge the universe can expand infinitely.
ReplyDeletehttp://curious.astro.cornell.edu/question.php?number=274
I agree with your analysis. Adding to yours, I think that if the universe expands to the edge and everything gets clumped together, than our galaxy run into a black hole or perhaps a neighboring galaxy, and thus destroying all human life as we know it.
DeleteYes totally agree
DeleteI like your thinking Matt. Sounds like you have a valid argument here.
DeleteDue to the Big Bang there is room for endless expansion potential even if we have not discovered any "edges"
ReplyDeletehttp://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
DeleteNo edges mean nothing is keeping us from expanding so the universe can expand as big as it wants
ReplyDeletehttp://curious.astro.cornell.edu/question.php?number=274
DeleteSince space is infinite, that means that the Earth has no edge and it will keep expanding.
DeleteThe universe expending by the power of Gravity on the other planets, stars, and galaxies. Energy can expend without edge
ReplyDeletehttp://io9.com/5526583/if-the-universe-is-expanding-whats-it-expanding-into
If The Universe Is Expanding, What's It Expanding Into?. (n.d.). io9 - We come from the future.. Retrieved September 9, 2013, from http://io9.com/5526583/if-the-universe-is-expanding-whats-it-expanding-into
DeleteThat's right, that's just like I said they assumed a center for universe
DeleteI think to say that the universe is expanding is to say there is an edge, otherwise it would not be able to get any bigger, because there were no edges to measure it by.http://en.wikipedia.org/wiki/Big_Bang
ReplyDeleteThere are theories that there is unlimited amount of space but there are more galaxies that we can run into which can
ReplyDeleteScientists knows that universe is infinite, and we cannot say it's expending. Scientists assumed a center for universe, then they now see that the sides are going farther from the center. It shows that universe is expending.
ReplyDeleteReferences
Curious About Astronomy: What is the universe expanding into? (n.d.). Retrieved from http://curious.astro.cornell.edu/question.php?number=274
From my research I saw a couple of theories to this. One of them just states that the universe has an infinite amount of space and just doesn't have an edge to it. And others say that there actually might be something outside of this universe that everything is expanding in to. But the theory about things outside this universe is impossible to prove because there is no way to observe anything outside this universe.
ReplyDeletehttp://curious.astro.cornell.edu/question.php?number=274
If there is no edge the universe can keep expanding forever and become infinitely big, so without an edge (that we know of yet) it is safe for the universe to expand but if we find an edge then many theories about how the universe will end may come true.
ReplyDeletehttp://curious.astro.cornell.edu/question.php?number=274
That is a great way to explain it in a short response!
DeleteI think that the universe is expanding into nothing it is making space to expand into and as it is sphere it can do this, also if you try to reach the end you would probably never make it as the universe will always go faster than you but if you do make it to the end and then keep going you will go around and around the sphere and think you haven't reached the end.
ReplyDeleteWard, J. (n.d.). If the universe is expanding, what is it expanding into? | The Big Question. The Big Question | Site maintained by the British Association for the Advancement of Science. Retrieved September 9, 2013, from http://bigquestion.wordpress.com/2008/03/04/if-the-universe-is-expanding-what-is-it-expanding-into/
One key fact that essential to know before approaching this questions is the fact that the expansion of the universe is happening faster than the speed of light travels. With that being said, it technically isn't expanding, rather it is expanding because the amount of space, time, and matter, around us is increasing. Some say that the universe is infinite, while others say that there will come a time where the universe expands out too much and finally rip apart in the theory called "the Big Rip". Furthermore, no there doesn't have to be an edge to the universe. The common misconception is that the portion of where the universe is expanding is the end of space; however, it is only the end of the observable portion of the universe. Matter already fills all of space, so it is only a question of whether the universe can expand to fill that matter that exists.
ReplyDelete"Brief Answers to Cosmic Questions." Brief Answers to Cosmic Questions. Harvard, n.d. Web. 09 Sept. 2013. .
It's really tough to figure out, as the universe doesn't seem to have an edge and it seems to be infinitely expanding. Since there isn't really an edge, the universe is going to infinitely expand. Since we don't live at the edge, we may never see an edge to the universe.
ReplyDelete"Curious About Astronomy: What is the universe expanding into?." Curious About Astronomy? Ask an Astronomer. N.p., n.d. Web. 9 Sept. 2013.
How is the universe constantly expanding if there is no edge?
ReplyDeleteThe best way to describe the universe is that it's stretching and other galaxies far away from the Milky Way galaxy are stretching and getting bigger. There is no edge but instead things are just stretching.(http://curious.astro.cornell.edu/question.php?number=274)
I agree with this point, since the universe is infinite, there really isn't an edge. The space must just be growing apart, but to an infinite point.
DeleteThis question is almost a contradiction, if the universe had edges then how would it constantly be expanding? Maybe the universe does have edges, the are just expanding also. http://curious.astro.cornell.edu/question.php?number=274
ReplyDeleteThe universe is expanding despite having no edge because it's not that the universes is expanding into anything, the space between the galaxies of the universe is just stretching.
ReplyDeleteRothstein, Dave. "Curious About Astronomy: What is the universe expanding into?." Curious About Astronomy? Ask an Astronomer. N.p., n.d. Web. 9 Sept. 2013. .
Scientist have not yet found if there is an edge to the universe because light isn't infinitely fast, because of this, scientist can only see as far as the light has reached in the universe. If there is an edge, scientist's theories on the end of the universe might hold true.
ReplyDeleteThe Edge of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/961202c.html
As of the current moment, astronomers and scientists have not found an end to the universe. Because of certain limitations, the edge, if there is any, can not be seen. With the amount of time it takes for light to reach us, it makes it even more difficult to search for the edge of the universe. The research done on the topic of expansion also gives the notion that the universe is expanding whether there seems to be an edge or not.
ReplyDeleteBrief Answers to Cosmic Questions. (n.d.). Center for Astrophysics. Retrieved September 9, 2013, from http://www.cfa.harvard.edu/seuforum/faq.h
Despite the fact the universe does not have an edge, it is constantly expanding. Even though scientists don't know how large the universe is, by observing objects in space (specifically the light they omit), they can assume the universe is growing larger. Vesto Slipher, for example, was able to prove this theory by studying nebulea in the Arizona sky. The nebula he was observing omitted an excess of red light, thus leading him to conclude that it was moving away from the earth. Because the earth is not special in the sense that it has repulsive properties, is the center of our solar system, etc, Slipher theorized that the universe, as a whole, was expanding. Others such as Edwin Hubble have found that Slipher's observations hold true for other objects in space. Therefore, despite the fact scientists have not discovered the edge of the universe, they can still assume the universe is expanding.
ReplyDeleteSDSS. (n.d.). The Universe. SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/proj/basic/universe
This is a great way of putting it. This really helped me understand the answer to this question. Great job!
DeleteIt is believed that the universe is infinite and there wouldn't be an edge if this was true. If there was an edge to the universe, then it wouldn't be constantly expanding, because it wouldn't have infinite room to expand.
ReplyDeleteUniverse has no edge, no center. (2010, February 17). Universe at Sonoma State University. Retrieved September 9, 2013, from http://universe.sonoma.edu/activities/no_edges.html
Scientist have not yet found if there is an edge to the universe because light isn't infinitely fast, because of this, scientist can only see as far as the light has reached in the universe. If there is an edge, scientist's theories on the end of the universe might hold true.
ReplyDeleteThe Edge of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/961202c.html
The simplest way to look at these questions is the following: if the universe includes, by definition, everything,all of space, time, matter, energy,than there can be nothing outside of it (and hence no edge), nothing for it to expand into. Its true that this is contrary to our everyday experience, as is much else in physics and astronomy; but of course our everyday experience does not extend to the entire universe.
ReplyDelete"Expansion of the Universe." Expansion of the Universe. N.p., n.d. Web. 09 Sept. 2013.
The universe is constantly expanding because of dark matter. It is a matter that can not be seen, but it is powerful enough to push galaxies farther away from each other.
ReplyDeletehttp://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy/
Gravity is working against the expansion of the universe. If the density is large enough, the expansion of the universe would stop and the universe would collapse. If the density is small enough, the expansion would continue forever. The matter in our universe is at a certain density to where it will expand but never collapse.
ReplyDelete"Expanding Universe." Hubble Law and the Expanding Universe. N.p., n.d. Web. 09 Sept. 2013.
What is our universe expanding into?
DeleteThe universe includes, by definition, everything -- all of space, time, matter, energy. Therefore, there can be nothing outside of it (and hence no edge.) Therefore nothing for it to expand into. If there were a higher-dimensional space in which the universe were embedded and into which it expands (like a two-dimensional balloon expanding into three-dimensional space), we could have no way of ever measuring the existence or characteristics of such a space.
ReplyDelete"Expansion of the Universe." Imagine The Universe! Home Page. N.p., n.d. Web. 9 Sept. 2013. <http://imagine.gsfc.nasa.gov/docs/ask_astro
The WMAP has stated and proved the existence of a dark energy that acts like an antigravity, which causes the universe to speed up its expansion
ReplyDeletedetecting., & background, m. t. (n.d.). WMAP- Life in the Universe. Wilkinson Microwave Anisotropy Probe (WMAP). Retrieved September 9, 2013, from http://map.gsfc.nasa.gov/universe/uni_life.html
There is no edge because space is made up of everything in space, time, matter, energy than there can be nothing outside of it (and hence no edge), nothing for it to expand into other then the universe keeps growing.
ReplyDeleteExpansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
Good point. I completely agree with you!
DeleteScientists have not found if there is an edge to the universe or not. But the sides of the universe are moving farther away from the center. Galaxies and stars are moving farther away from each other over time. Gravity is working against the expansion of the universe.
ReplyDelete"Expanding Universe." Hubble Law and the Expanding Universe. N.p., n.d. Web. 09 Sept. 2013
The fact that is it has no edges is the reason it is constantly expanding! The universe is infinitely large, which allows it to grow on all sides.
ReplyDeleteNo author (n.d.). The Expanding Universe. Retrieved from http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp
Many scientist believe that the universe in no,t expanding into anything. Since there was no center from which the universe started, as the universe is expanding, there is no infinite into was the universe is expanding to.
ReplyDeleteBrief Answers to Cosmic Questions. (n.d.). Center for Astrophysics. Retrieved September 9, 2013, from http://www.cfa.harvard.edu/seuforum/faq.htm#e1
Big Bang: How Did the Universe Begin?. (n.d.). UGCS - Welcome to UGCS!. Retrieved September 9, 2013, from http://www.ugcs.caltech.edu/~yukimoon/BigBang/
The Expanding Universe. (n.d.). SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp
The Universe. (n.d.). SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/proj/basic/universe/
scientists. (n.d.). THE BIG BANG . University of Michigan. Retrieved September 9, 2013, from http://www.umich.edu/~gs265/bigbang.htm
ALL WEBSITES
Scientists aren't sure if there is an edge to the universe or not. But it is expanding because the space between the galaxies is stretching.
ReplyDeleteRothstein, Dave. "Curious About Astronomy: What is the universe expanding into?." Curious About Astronomy? Ask an Astronomer. N.p., n.d. Web. 9 Sept. 2013. .
I read that space is infintley big and that is what is allowing galaxies to continuously expand.
DeleteBecause the universe is infiniitely large, it will never cease to expand its "foreverness."
ReplyDeleteCurious About Astronomy: What is the universe expanding into?. (n.d.). Curious About Astronomy? Ask an Astronomer. Retrieved September 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
Due to the Big Bang there is room for endless expansion potential even if we have not discovered
ReplyDeletehttp://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
Scientists have not yet discovered an edge to the universe but we know the universe is expanding because everything in the universe is moving farther and farther apart. Because there is no edge, that further explains how the universe can expand because there is so much space for it to expand to.
ReplyDeleteRothstein, D. (n.d.). Curious About Astronomy . Retrieved from http://curious.astro.cornell.edu/question.php?number=274
I like your point and I agree the universe can keep expanding because there is no edge to stop it. :-)
Deletethe universe includes, by definition, everything(all of space, time, matter, energy) than there can be nothing outside of it (and hence no edge), nothing for it to expand into. Its true that this is contrary to our everyday experience, as is much else in physics and astronomy; but of course our everyday experience does not extend to the entire universe.
ReplyDeleteReferences
Expansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
APA formatting by BibMe.org.
We have no way of measuring the expansion into "everything". Scientists have no yet discovered how we could expand into infinity.
ReplyDeletehttp://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
Scientists do not know for sure that there is no edge to the universe. They do know that the universe is expanding.
ReplyDeletehttp://www.mmo-champion.com/threads/1209460-If-the-universe-is-infinite-how-is-it-expanding
DeleteIn reality, ALL of space was filled with energy right from the beginning. There was no center to the expansion, and no magical point from which matter hurtled outward. The confusion arises in part because of the amazing conclusion that the OBSERVABLE portion of the universe was once packed into an incredibly tiny volume. But that primordial pellet of matter and energy was NOT surrounded by empty space... it was surrounded by more matter and energy (which today is beyond the region we can observe.) In fact, if the whole universe is infinitely large now, then it was always infinite, including during the Big Bang as well.
ReplyDeleteUniversity, Harvard . " Brief Answers to Cosmic Questions." Center for Astrophysics. N.p., n.d. Web. 9 Sept. 2013. <
This was really interesting to think about, it's not often you hear many theories about the universe before the big bang.
DeleteThere is no edge because the universe is everything and nothing can exist outside of it. The universe as we know it is infinite and contains absolutely everything, and as it expands, there is still nothing outside of the universe.
ReplyDeleteLoewenstein, M., & Fredericks, A. (2001, October 21). Expansion of the Universe. Imagine The Universe!. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
If there is no edge then it would result in the expansion of the universe and could become infinite big. so technically without a edge it would be considered safe for the universe to expand. but scientists say if we do find a edge then theories about how the universe will come to a end may become true!
ReplyDeleteCurious About Astronomy: What is the universe expanding into? (n.d.). Retrieved from http://curious.astro.cornell.edu/question.php?number=274
Scientists' studies have no way of being able to see an "edge" scientifically although there are theories that space is expanding into different dimensions.
ReplyDeletehttp://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
Is that the majority belief?
DeleteUniverse: all of space, time, matter, energy. Then there can be nothing outside of it, no edge , nothing for it to expand into.
ReplyDeleteExpansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astroExpansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro
The universe itself is infinitely big. The spaces between galaxies has been stretching into greater distances, so the universe is expanding, it just isn't expanding into anything.
ReplyDeletehttp://www.huffingtonpost.com/2013/07/17/universe-expanding-cosmologist_n_3606136.html
Agreed, It must be expanding into something. That something is space.
DeleteThere is room for endless expansion in space "empty space"
ReplyDeletehttp://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
True Bigbill53 but what about the edge? Is there one or not?
DeleteThe universe can expand because of the fact that space between two points can grow. Therefore the edges shouldn't be an issue. This confuses me but makes sense to an extent.
ReplyDelete&. (n.d.). ELI5: How is the universe constantly expanding when there is no edge? : explainlikeimfive. reddit: the front page of the internet. Retrieved September 9, 2013, from http://www.reddit.com/r/explainlikeimfive/comments/1k3g1h/eli5_how_is_the_universe_constantly_expanding/
The universe contains everything and has no edge. We do know that the universe is expanding at an infinite rate which limits the possibility of finding an edge or the boundary it is expanding towards.
ReplyDelete"Expansion of the Universe." Imagine The Universe! Home Page. N.p., n.d. Web. 9 Sept. 2013. <http://imagine.gsfc.nasa.gov/docs/ask_astro
Since scientists can not find a definite edge on the universe there's no stopping point for the universe. The universe can expand forever since there's no edge. There is an infinite amount of space for the universe to expand into.
ReplyDeleteBritt Robert (10/10/12) does the universe have an edge? http://www.livescience.com/33646-universe-edge.html
If the universe is infinitely big, thenit isn't expanding into anything; instead, what is happening is that every region of the universe, every distance between every pair of galaxies, is being "stretched", but the overall size of the universe was infinitely big to begin with and continues to remain infinitely big as time goes on, so the universe's size doesn't change, and therefore it doesn't expand into anything. If, on the other hand, the universe has a finite size, then it may be legitimate to claim that there is something "outside of the universe" that the universe is expanding into. However, because we are, by definition, stuck within the space that makes up our universe and have no way to observe anything outside of it, this ceases to be a question that can be answered scientifically. So the answer in that case is that we really don't know what, if anything, the universe is expanding into.
ReplyDeleteRothstein, D. (n.d.). Curious About Astronomy: What is the universe expanding into?. Curious About Astronomy? Ask an Astronomer. Retrieved September 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
"Expanding" isn't really the best word to describe what is happening to the universe, although that is the word that is often used - a word choice which I think leads to a lot of unnecessary confusion regarding what is already a difficult topic! A more accurate word for what the universe is doing might be "stretching".
ReplyDeleteThe difference between "expanding" and "stretching", for me at least, is that an "expanding universe" conjures up an image where there is a bunch of galaxies floating through space, all of which started at some center point and are now moving away from that point at very fast speeds. Therefore, the collection of galaxies (which we call the "universe") is expanding, and it is certainly fair to ask what it is expanding into. It is stretching into free space.
Curious About Astronomy: What is the universe expanding into?. (n.d.). Curious About Astronomy? Ask an Astronomer. Retrieved September 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
You made an interesting point. I read an article that said to imagine the universe as a balloon with dots on it and the more air that is blown into it the farther the dots stretch apart. I like how you prefer to term "stretch" to expanding because it makes more sense.
DeleteWe have not yet discovered an edge to the universe and there is so much space and no boundary so the universe just keeps on expanding.
ReplyDeleteThe Expanding Universe. (n.d.). SDSS SkyServer DR7. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp
What if there is an edge
DeleteAs stated, "The space between two points grows. Literally the space between them. It's not expanding into anything, and therefore the edge of space never becomes an issue". http://www.reddit.com/r/explainlikeimfive/comments/1k3g1h/eli5_how_is_the_universe_constantly_expanding/
ReplyDeleteThe universe is not expanding, it is the space between the objects growing further apart.
Awesome point!
DeleteThere is no evidence that there is an edge, therefore it is possible for the universe to be constantly expanding
ReplyDeleteBrief Answers to Cosmic Questions. (n.d.). Center for Astrophysics. Retrieved September 9, 2013, from http://www.cfa.harvard.edu/seuforum/faq.htm
Great point Mack!
DeleteThe universe includes, by definition, everything - all of space, time, matter, energy - therefore there can be nothing outside of it (and hence no edge), nothing for it to expand into.
ReplyDeletehttp://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
The fact that the universe has no edge doesn't effect it's expansion. Because the universe is infinitely big, the spaces between galaxies are able to stretch larger and larger into the infinite space of the universe.
ReplyDeleteIn Curious About Astronomy?. Retrieved Sep. 9, 2013, from http://curious.astro.cornell.edu/question.php?number=274
Another way to look at it: if there were a higher-dimensional space in which the universe were embedded and into which it expands (like a two-dimensional balloon expanding into three-dimensional space)
ReplyDeleteExpansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
The area between the galaxies is growing further apart because the universe is infinite space. No edge will be discovered because there is no beginning and end to be found, it is just the space between the objects your looking at.
ReplyDeleteSpeed of Universe's Expansion Measured Better Than Ever: Scientific American. (n.d.). Science News, Articles and Information | Scientific American. Retrieved September 9, 2013, from http://www.scientificamerican.com/article.cfm?id=speed-of-universes-expansion
Very smart elliot
DeleteThe galaxies will keep getting farther apart cause there is no end to space
ReplyDeletehttp://curious.astro.cornell.edu/question.php?number=274
Since the universe has no edge, it doe not affect its expansion. The universe has infinate ammount of space letting each galaxy expand as far as it needs to.
ReplyDeletehttp://curious.astro.cornell.edu/question.php?number=274
The universe contains everything: energy, forces, matter, etc. There is nothing beyond the universe, as far as we know, so there is no edge and no end to beyond space.
ReplyDeleteExpansion of the Universe. (n.d.). Imagine The Universe! Home Page. Retrieved September 9, 2013, from http://imagine.gsfc.nasa.gov/docs/ask_astr
There is no end to the universe, there is an unlimited amount of space so therefore there is no ending point where the universe will stop expanding.
ReplyDelete"NASA's Cosmicopia -- Ask Us - Space Physics - Cosmology - Expansion of the Universe." NASA's Cosmicopia -- Home. N.p., n.d. Web. 9 Sept. 2013. <http://helios.gsfc.nasa.gov/qa_sp_ex.html
The universe is constantly expanding and the fact that it doesn't have an edge doesn't affect it. The universe has an infinite amount of space so it can continue to expand.
ReplyDelete"What is the Universe Expanding Into?." Better Living Through Astronomy::DeepAstronomy.com. N.p., n.d. Web. 9 Sept. 2013. .
As far as we know the universe is expanding into nothing...When reading this article it says the most important property of space is the distance between two points. In fact, the distance measure defines space entirely. The evolution of the distance scale is governed by the amount of matter and energy in the universe, and as time passes, the scale increases and the distance between galaxies increases. If the universe is indeed infinite, then the simple answer to that is the universe doesn't have anything to expand into.
ReplyDeletehttp://curious.astro.cornell.edu/question.php?number=274
DeleteIf the universe is infinitely big, then every distance between every pair of galaxies, is being "stretched", but the overall size of the universe was infinitely big to begin with and continues to remain infinitely big as time goes on, so the universe's size doesn't change, and therefore it doesn't expand into anything. http://uk.answers.yahoo.com/question/index?qid=20060928184748AAURFCt
ReplyDeleteI totally agree with you.
DeleteBy definition, the universe is a vast collection of ever expanding matter, space, time and energy.Because of the belief that the universe expanded from a single point, there can be no edge. It simply continue expanding, creating its own space all the time.
ReplyDeleteWeb Link
http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
The earth itself is not expanding. It is the space between planets that is expanding. We are slowly getting further and further from other planets. Space will continue to keep expanding
ReplyDeleteThe universe really does not have an edge if you think in a 3 dimensional sense. While not entirely correct, you can imagine the universe as a expanding multidimensional balloon that has a 3 dimensional surface.
ReplyDeletehttp://answers.yahoo.com/question/index?qid=20090514063713AARcYHi
here are three possibilities of how the universe is expanding. One where it will just expand forever at a constant speed. Another theory where where the universe expands infinitely to zero and then stops expanding. And then there is the third way and that is when the universe expands until its highest point and then pulls back in at the same rate it expanded at and the galaxies collide.
ReplyDeleteThe Expanding Universe. (n.d.). SDSS SkyServer. Retrieved September 9, 2013, from http://skyserver.sdss.org/dr1/en/astro/universe/universe.asp
We don't no how fast the universe is expanding but we no it is and it is expanding fast. There is a really big amount of space out there that we don't no about but it has all the room to expand http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/011021a.html
ReplyDeleteAs of today, there is no edge that we know of. With that being said, the universe will keep expanding until it reaches the edge. This could go on for who knows long. There is lots of empty space left for our universe to expand into.
ReplyDeletehttp://skyserver.sdss.org/dr1/en/astro/universe/universe.asp