SvennoJ on 09 August 2011
@Netyaroze
I know about the redshift, at least I think I do. I thought it was different from the Doppler effect as it is the stretching of the universe that causes it. Although I guess it is similar since the stretching is responsible for everything moving apart.
It gets hard to wrap my head around it when light travels for billions of years while the universe is stretching. And light from old faraway galaxies released today might never reach us anymore, since they are moving away faster then the speed of light by now. Those calculations can't be easy.
I need to read up about Hubble's law some more.
