Another universe in the other side of a black hole?
99841
Is it mathematically possible for a black hole to be connected to a white hole or a worm hole?
3644
Symmetrical twin paradox in a closed universe
64085
Story about a multiverse theory of immortality
112411
What happens when a photon reaches the "edge" of the universe?
126980
What happens at the interface between two universes with opposite thermodynamic arrows of time?
47082
If spacetime itself is expanding, how could we ever tell?
86091
Can black holes actually merge?
95879
Other explanation for cosmological redshift?
68188
Are scientists missing the point with distant cosmic objects, or is it just me?
107647
The uncertainty principle and black holes
75483
Is there a limit as to how fast a black hole can grow?
56753
Is it possible that galaxies' redshift is caused by something else than the expansion of space?
54636
Dark Energy / Accelerating universe: naive question
25254
What will the universe look like for anyone falling into a black hole?
59422
Gravity in other than 3 spatial dimensions and stable orbits
124006
Redshift of merging black holes
130652
Interstellar -- Black hole manipulation?