If the universe were to eventually get that cold where matter itself might collapse, would the force of gravity cease? I wonder if anybody knows this, and am really looking forward to an INTELLIGENT answer!
2007-02-10 15:22:00 · 16 answers · asked by Paul Hxyz 7 in Science & Mathematics ➔ Physics
To those who say that absolute zero is not possible: neither was exceeding the speed of light... until the expansion of the early universe was revealed that was no longer true. This is a THEORETICAL question - if an atoms motion were stopped... what would happen? Would gravity cease if it happened on a universe-wide scale? Just because we think something is impossible doesn't mean it is - they used to believe a man would die if he exceeded 60 miles per hour.
2007-02-10 15:31:11 · update #1
I would say no. since the very definition of absolute zero states that there can be no movement of molecules this would mean there would be no acceleration, due to gravity or otherwise. think about it . since newton discovered gravity only after looking at the apple falling and the moon moving, it could be said that no motion means no gravity.
2007-02-10 21:54:20 · answer #1 · answered by pro man 1 · 2⤊ 1⤋
This is ongoing research, as no one knows for sure what causes gravity. But, it is theoretically impossible to reach absolute zero, so the question really doesn't make sense. One might be able to observe a reduction in gravity at close to absolute zero, which has recently been achieved. However the amount of mass in the Einstein-Bose Condensate are so small, it may not be possible to even detect any change in gravity.
2016-05-25 08:03:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The early expansion of the universe did not exceed the speed of light. The speed of light was greater for some unknown reason. Regardless, gravity would still exist at absolute zero. Think about it, matter would still exist. In theory, motion causes mass to increase, via Einstein's relativity, granted this would be very minute until motion gets close to the speed of light. In theory, as something gets hotter, gravity would increase because mass increased (though only slightly); cooling it would have the reverse effect. But at a motion 0 (rest mass), matter would still exist, as would gravity.
2007-02-10 16:12:02 · answer #3 · answered by The Doctor 7 · 0⤊ 1⤋
I do believe I remember reading that we can achieve absolute zero, but can only maintain it for such a brief moment it is ineffectual to most studies... I don't think that matter would collapse... It would get condensed. As for the gravity... After thinking for a minute on what would be needed for such a thing to happen, (such as all heat sources vanishing)... It would mean that the core to our planet would solidify. This core is a vital part to gravity on Earth. Seeing as how hypothetically there is no sun for gravity in the solar system, we would just be floating around in space, and seeing as how the core to Earth becomes solid... We lose our gravity, (among a lot of other vital things). So you might be on to something here. Of course this is all hypothetical, AND this is based on what I know about our universe, (I don't have a physics degree). In other words, it is just my opinion.
CyberNara
To all those who might disagree... gravity is based on cyntrifical force. Our planet, and those within the solar system have gravity because they are spinning around the sun. This orbit, (I believe), is what gives some of the planets their spin, which gives them gravitational pull.
Here is a simple test I learnt as a kid. Take the front end of a bike, and hold onto the axle at both ends. Sit in a chair that you can spin around in... Nothing is happening right. Now get someone to spin the tire really fast, and tilt the wheel to your left or right... What is happening now?...
2007-02-10 15:58:22 · answer #4 · answered by Joe K 6 · 0⤊ 1⤋
Yes. But it would be too cold to visit very long. It is absolutely cold in space. The universe cannot collapse. The universe does not have gravity. Gravity is possessed by stars and planets. Nobody can even say what gravity is exactely.
2007-02-10 15:31:02 · answer #5 · answered by Anonymous · 1⤊ 0⤋
THE TEMPERATURE OF THE UNIVERSE IS ABSOLUTE ZERO
ABSOLUTE ZERO IS IMPOSSIBLE TO ACHIEVE AS THAT IS THE POINT WHERE ALL MOLECULES STOP MOVING
but if everything in the universe collapses, i think it will create a giant black hole and shrink to a small dot and there will be a big bang
2007-02-10 15:28:32 · answer #6 · answered by cars_o_holic 3 · 0⤊ 0⤋
Where there is mass there is gravity. It doesn't matter what the structure is or what its temperature is. A moving atom has the same mass as a theoretically stopped one.
2007-02-10 15:38:44 · answer #7 · answered by Steve 7 · 0⤊ 1⤋
Gravity is characteristic of a mass which would produce a kink around it in the space-time curvature(cf.general theory of relativity)which gives the effect of gravity.At absolute zero, mass would still exist(even in microscopical systems on account of a finite quantum zero-point energy)and hence the gravity would still exist.
2007-02-10 19:44:23 · answer #8 · answered by Prabhanjan 2 · 0⤊ 1⤋
i agree with first answer. temp has nothing to do with gravity. gravity is determined by mass.
BTW, it is not possible to acheive absolute zero. it is possible to get very close, but not all the way there.
edit-
as far as i know, it is not possible to exceed the speed of light either. but if you say so, heck, einstein must have been wrong.
2007-02-10 15:27:48 · answer #9 · answered by Anonymous · 1⤊ 1⤋
since we are pulled towards the biggest thing in the universe so unless the earth shifted and collapsed then yes, there would still be gravity
2007-02-10 15:32:01 · answer #10 · answered by sarsar1239 2 · 0⤊ 1⤋