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.... expand? And if we know what 'space' is made off cant we put a timescale on when theis is?

2006-06-05 20:08:17 · 7 answers · asked by tunachunks199 1 in Science & Mathematics Astronomy & Space

7 answers

The planets in this solar system are in stable orbits and get no farther away from each other than their orbits allow.

You are thinking of things like galaxies moving away from eachother, indicating that the universe is expanding.

First off, to correct a misconception, some galaxies are moving towards one another, for example, the Andromeda Galaxy, and our own galaxy the Milky Way.

Certain galaxies also seem to be "clumping" together, traveling towards something called "the geat attractor".

Distant galaxies and quasars seem to be moving away.

To answer your question, some speculate that the expansion of the universe will continue forever and that gravity will lose in the long run. Eventually clusters of matter will become so seperated from eachother that the possability of any productive interactions approaches zero and stars will eventually die, and their remnants will be spread to thin to form into new ones. The universe, will essentially be a cold, dark, corpse. This is called the "cold death" theory. Depressing isn't it?

But never fear! There are other theories out there! Perhaps the universe will eventually implode into a big crunch, and the force of this implosion will create a new universe! Scientists aren't yet sure exactly how the universe will end. Hopefully none of us will be around to find out by example.

2006-06-05 20:47:40 · answer #1 · answered by minuteblue 6 · 4 3

'Gases/mass' are not expanding! The space of the universe is what's undergoing expansion. Everything else is just along for the ride. The most recent research based on precise observations indicate that the universe is geometrically 'flat,' meaning that it will expand forever, although that expansion might slow (right now it's actually speeding up for some unknown reason). Most astronomers predict that trillions upon trillions of years from now, the universe will be totally empty--an absolute vacuum with no mass or energy anywhere. Even then, though, space will continue to expand.

2006-06-06 03:25:01 · answer #2 · answered by Chug-a-Lug 7 · 0 0

If u believe in ever expanding universe there can be no time when the gases cannot expand...
They can keep on expanding..there may be a time when a distance between any two atoms could be lightyears across..
This surely will take lotz of time...i.e more than 10power50 years..
thats a lots of time..
BTW the sun's not gonna last more than 5-6 Billion years..

2006-06-06 03:19:02 · answer #3 · answered by TalkToMe 2 · 0 0

What you are describing is the Big Crunch, the contraction of the Universe, Scientists say that a certain critical mass is required for this to happen and as of now, nobody still knows if there is that much mass.

2006-06-06 03:12:41 · answer #4 · answered by ag_iitkgp 7 · 0 0

No because planets from other universes will be expanding to and coming into our universe which will controll the density ratio of our universe.
There are a lot of idiots who don't include the planets and solar systems of other universes...

2006-06-06 03:15:28 · answer #5 · answered by simsjk 5 · 0 0

there are 3 ideas. and in 1 of them we have planets movin away
in the 2 :
the planet will be stop movin
3
the planet will be stop movin away and they start to move backway

2006-06-06 03:17:39 · answer #6 · answered by salsa_hckth 1 · 0 0

yes, they have put a time scale on it, but the time is so long, it is millions of years in the future, long after our sun goes nova.

2006-06-06 03:11:14 · answer #7 · answered by Anonymous · 0 0

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