What is outside the boundaries of our universe (Future horizon)
2253
If the universe is expanding, what is it expanding into?
137796
Local translations in curved spacetime
106137
Interstellar Ending Scene and Logic
130652
Interstellar -- Black hole manipulation?
149853
What infinity is greater than the continuum? Show with an example
141317
How would it be to look at the sky if the earth were near the edge of the universe?
27952
What's the name of the galaxy far, far away?
50584
Parallel universes: are there an infinite amount of universes?
66880
Seeking neighborhood boundaries globally?
47968
Thought Experiment - Poking a stick across a Black Hole's Event Horizon
95674
Expansion of the Universe, will light from some galaxies never reach us?
21084
Size of the universe
143065
Fine Tuned Universe
56103
Is the universe finite or infinite?
39315
Single word describing something "outside of oneself"
45174
Measuring extra-dimensions
81220
Space which is connected but not path-connected