Gabougi
Gabougi t1_j1hsvjh wrote
Reply to comment by melanthius in Hoping to put hard numbers on the universe’s expansion to put it in perspective by melanthius
The constant for the universe expansion is (70km/s)/Mpc, so if we approximate MW-Andromeda to be 1 Mpc, in a million years it would be ~233 light years further. In real life, thought, it has a relative speed towards us and the gravitational bound between our galaxy and Andromeda is enough to render the expansion useless
Gabougi t1_j2bfpm8 wrote
Reply to comment by SnipeUout in I don’t believe in the black hole. by Rabbitlooker
That’s pretty much what it is, it’s just that if it’s dense enough so light can’t escape, then it’s not made out of gas/plasma like stars are anymore