Modern redshift surveys such as the 2 degree field Galaxy Redshift Survey (2dFGRS) and the Sloan Digital Sky Survey (SDSS) reveal fully 3-dimensional distribution of 105–6 galaxies over a large ...
From the point of view of someone inside of a black hole, where is the event horizon? originally appeared on Quora: the place to gain and share knowledge, empowering people to learn from others and ...