Pushing a long stick into the event horizon
47968
Thought Experiment - Poking a stick across a Black Hole's Event Horizon
91581
Is there a way to split a black hole?
125571
Practical time travel: time dilation above the event horizon
19550
How does some of the black hole (BH) mass escape the event horizon (EH) of either BH, or the merged EH of two merged BHs?
68392
How to start an artificial gravity?
108574
Behavior of a gravitation field of an object falling into a black hole
57667
Escape velocity from Earth
70687
Is the EmDrive, or "Relativity Drive" possible?
6076
Rocket propelled by a giant monochromatic laser
68885
Escape velocity from a rotating black hole
148471
break 1-meter stick randomly into 3 segment, form triangle?
99437
Using a naked black hole as a mirror?
110814
A barrier isolates Earth from space and slows down time
30392
Time taken for object in space to fall to earth
69908
Black hole photography
66232
At what moment will matter falling into a black hole affect its size?
31246
How much thrust would be needed to turn a hobbyist weather balloon into a deep space probe?