2006-09-07 05:40:44 · 3 answers · asked by goring 6 in Science & Mathematics ➔ Physics
Per haps it folows the 2nd law of thermodynamics?
2006-09-07 05:52:02 · update #1
Mainly the expansion of universe. Scientists are still puzzled why do they expand? No convincing answer yet. Or the prediction of data could be wrong.
2006-09-07 05:45:19 · answer #1 · answered by Dr M 5 · 0⤊ 0⤋
Due to big bang their was an outward force on the fragments called galaxies. According to Newton's 1st law they are still moving in the direction provided to them by the force applied and they will continue to do so as there is no air resistance/drag in the free space
2006-09-07 05:50:54 · answer #2 · answered by Gogs 1 · 0⤊ 0⤋
According to the doppler effect, galaxies are moving away because the light we observe from far away galaxies is red-shifted. (shifted towards the red end of the spectrum, as it would be if the object was moving away from us).
We believe they are moving away from each other because of the energy imparted in the big bang.
2006-09-07 09:49:29 · answer #3 · answered by tomz17 2 · 0⤊ 0⤋