Shouldn't our speed remain constant? No galaxies should affect any other gravitationally because the big bang should move all matter away from eachother, and yet we see galaxies running into eachother. I feel so small.
2007-10-29 17:41:38 · 10 answers · asked by akabryanhall 2 in Science & Mathematics ➔ Astronomy & Space
In physical cosmology, dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. [1] Assuming the existence of dark energy is the most popular way to explain recent observations that the universe appears to be expanding at an accelerating rate. In the standard model of cosmology, dark energy currently accounts for almost three-quarters of the total mass-energy of the universe.
2007-10-29 18:09:04 · answer #1 · answered by gdc 3 · 2⤊ 0⤋
There is a critical mass of dark matter above which the Universe will forever expand increasingly faster (balloon theory) below which Universe will eventually collapse into itself. At some point when Universe reaches certain size and shows no sign of slowing expansion, we will know it is above critical mass.
2007-10-30 02:38:24 · answer #2 · answered by Anonymous · 1⤊ 0⤋
the universe is expanding and that is well known. but as can be seen by the example of inflating a balloon, the farther a point is from another, the faster they move away from each other.
this is shown in practice using the doppler effect,used to calculate the distance galaxies are from us.
the farther a galaxy is from us, the faster it moves away
2007-10-30 00:58:32 · answer #3 · answered by hawk 2 · 0⤊ 1⤋
The ones farther away seem to be moving faster.
Imagine a balloon. Put dots on the balloon. Inflate the balloon. All dots (galaxies) seem to be moving away from each other. Picture yourself on one dot (galaxy). The farther away a galaxy is, the faster it seems to be moving away.
2007-10-30 00:49:27 · answer #4 · answered by Howard H 7 · 1⤊ 1⤋
Dark matter and regular matter attract and supposedly it blew out faster from the big bang than regular matter did so it is playing catch up
2007-10-30 00:57:45 · answer #5 · answered by bocaj417 2 · 0⤊ 1⤋
Momentum.
Feel the power.
2007-10-30 00:59:23 · answer #6 · answered by Anonymous · 0⤊ 1⤋
the power of the heavens shall be shaken
2007-10-30 00:49:38 · answer #7 · answered by Anonymous · 0⤊ 2⤋
the universe is still expanding,from the big bang, those universe's are probably riding the shock wave!
2007-10-30 00:51:15 · answer #8 · answered by crengle60 5 · 0⤊ 4⤋
Maybe they know something we don't.
2007-10-30 00:45:10 · answer #9 · answered by cavidda 5 · 0⤊ 2⤋
i hadn't noticed
2007-10-30 00:45:51 · answer #10 · answered by quickjoey 4 · 0⤊ 2⤋