Quote:
Originally posted by Munku
You realize you contradicted your "nothing can go faster than speed of light" statement, with the last half of your post..
|
well, the galaxies themselves are not moving away from us at speeds faster than speed of light. the universe itself is expanding, and the farther away a galaxy is from us, the faster it is moving away from us.
astronomers can tell how far away a galaxy is from the redshift. the greater the redshift, the faster it is moving away from us, the farther away it is. they could the use hubbles constant to guess how far away it is