Apparently, this user prefers to keep an air of mystery about them.
13 Why are there no green stars? apr 19
13 Can we (theoretically) spin the black hole so strong that it will be broken apart by centrifugal force? may 25 '14
12 Escaping a black hole dec 22 '13
10 Why are orbits elliptical instead of circular? dec 24 '13
9 How are black holes doors to other universes? jun 16 '14
9 Will new stars stop forming at some point of time? jan 13 '14
8 Does gravity slow or speed light up? jan 11 '14