News for hackers. Stuff that matters.
Re:The Last of the Universe’s Ordinary Matter Has Been Found by cygx on Tuesday September 11, 2018 @07:50AM (#17958816)
In my opinion, that whole 'moving away from us faster than c' business is not really a good way to think about this: For one, we can see to a redshift of about 10, corresponding to a comoving distance of about 30Gly, and a recession velocity of about 4c (four times the speed of light!) at time of emission.

There's a cosmological event horizon. Light emitted from within will reach us in finite time, light emitted from without won't. Similar to how a distant observer will never see on object falling into a (stationary) black hole cross the Schwarzschild horizon, we won't see galaxies crossing the cosmological horizon.

There are no comments on this comment yet.