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Why is Andromeda galaxy approaching the milky way galaxy if the universe is expanding exponentially and every thing is supose to be moving further apart due to the expansion of space?
Wiki User
∙ 9y ago
Not everything is moving away from us. The farther an object is away from us, the greater the affect of the expansion. At the distances within galaxy clusters the effects of expanding space are rather small. It is only galaxies in other clusters that are moving away from us. In terms of intergalactic space, the Andromeda galaxy is very close to us, so any effects of cosmic expansion are negligible. At such a distance, the gravitational attraction between the two galaxies has a much stronger influence.
Wiki User
∙ 9y ago
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Will earth be destroyed when the Andromeda galaxy collides with the milky way galaxy?
The collision of Andromeda with the Milky Way is not expected for many billions of years, by which time the Earth will have already been destroyed by the expansion of the sun into a red giant.
Which view of the fate of the universe is currently favored a big crunch or an endless ever expanding universe?
Answer: I don't believe that any consensus has been reached, although it seems that more people are arguing that a "big crunch" is more likely that an endless expansion into increasing entropy. But this is definitely a question that you should ask again in about 15 years. Answer number 2: The ever-expanding Universe. The main reason this seems likely is that it has been observed that the expansion of the Universe is actually accelerating - i.e., it is expanding faster now than in the past. Answer number 3 : I agree with answer 2. The discovery of "dark energy" and the increasing rate of expansion of space favors the ever expanding Universe.
What are the three possible fates of the universe?
1. The universe will keep expanding forever 2. The expansion of the universe will gradually slow down, and the universe will approach a limit in size. 3. The universe will stop expanding and start to fall back in on itself.
What is 'Pulsating theory' and 'Steady state theory'?
Pulsating Theory According to this theory, the universe is supposed to be expanding and contracting alternately i.e. pulsating. At present, the universe is expanding. According to pulsating theory, it is possible that at a certain time, the expansion of the universe may be stopped by the gravitational pull and the may contract again. After it has been contracted to a certain size, explosion again occurs and the universe will start expanding. The alternate expansion and contraction of the universe give rise to pulsating universe.
How can galaxies collide if they are moving away from each other?
Not all galaxies are moving away from each other. In fact the galaxy Andromeda is moving toward the Milky Way and they will eventually collide, because Andromeda is so much bigger than our Milky Way it will preatty much eat us and ruin our galaxy. Good news: it won't happen in our life time, and we are the 2nd largest gallaxy in the Local Group and no other (known) gallaxies are moving toward us.
What is the universal expansion?
Edwin Hubble discovered our universe was expanding from his observations of extragalactic nebula (other galaxies) from the Mt. Wilsom Observatory. His discovery was announced in 1925. What Hubble discovered was that the further a galaxy is from ours, the faster it is receding. Albert Einstein would have received credit for the discovery of the expansion of the universe had he not tinkered with his equations for General Relativity to fudge a "static" universe. This expansion is the expansion of intergalactic space itself. Our local space is not expanding. In fact, Andromeda, our sister galaxy, is actually approaching us. But the furthest galaxies we can see are moving away at a pretty good clip. If you would like more information on this, you might look up the "balloon" analogy.
Is the universe still expanding?
Yes, and the expansion is accelerating - it is expanding faster and faster.
The expanding of matter when it is heated?
thermal expansion
Is expanding a chemical or physical?
Expansion is a physical property.
Which theory is also known as expansion theory?
The expanding universe model
What is meant by the expansion velocity of a galaxy?
The speed at which a galaxy is expanding/getting larger.
What is the verb for expanse?
The verb for expansion is expand.Other verbs are expands, expanding and expanded."We will expand the empire"."Her horizons were expanding"."His education has expanded his knowledge".
Is the universe curve and for ever expanding?
The shape of the Universe is yet being investigated - it is not known for sure what its shape on a large scale is.As for the expansion, our current knowledge is that the Universe is not only expanding, but that the rate of expansion is increasing (it is expanding faster than in the past). It may be reasonable to assume that this trend will continue in the future, but it would also be a little premature to be completely sure.The shape of the Universe is yet being investigated - it is not known for sure what its shape on a large scale is.As for the expansion, our current knowledge is that the Universe is not only expanding, but that the rate of expansion is increasing (it is expanding faster than in the past). It may be reasonable to assume that this trend will continue in the future, but it would also be a little premature to be completely sure.The shape of the Universe is yet being investigated - it is not known for sure what its shape on a large scale is.As for the expansion, our current knowledge is that the Universe is not only expanding, but that the rate of expansion is increasing (it is expanding faster than in the past). It may be reasonable to assume that this trend will continue in the future, but it would also be a little premature to be completely sure.The shape of the Universe is yet being investigated - it is not known for sure what its shape on a large scale is.As for the expansion, our current knowledge is that the Universe is not only expanding, but that the rate of expansion is increasing (it is expanding faster than in the past). It may be reasonable to assume that this trend will continue in the future, but it would also be a little premature to be completely sure.
What were the reasons for the imperial expansion 1870-1900?
America's expansion in the 1900's was because European countries were expanding. America hoped to match them.
What is meant by uniform rate of expansion and contraction?
It means expanding and contracting at the same speed.
Why space is expanding?
Unknown. It started at the "big bang" and is still expanding, and now it seems to be expanding even faster (so-called dark energy) But the "why" is a total mystery.
Will earth be destroyed when the Andromeda galaxy collides with the milky way galaxy?
The collision of Andromeda with the Milky Way is not expected for many billions of years, by which time the Earth will have already been destroyed by the expansion of the sun into a red giant.
