Interstellar was somewhat correct about the event horizon. In theory there also could be an escape velocity but since nothing moves faster than light nothing can escape it. Since light (speed). is the ultimate barrier for velocity.
And every mass bends the space, the small the mass the small the dent.
In science fiction and with a real theorem people “move” faster than light. But using the Alcubierre drive would require so much energy that it is (for now(?)) impossible to achieve. The drive also doesn’t propel the spacecraft faster than light but bends the space around it, so technically you would more so move the space around you, instead of traveling though space.
mkwt@lemmy.world 1 week ago
It’s not just excessive quantities of regular energy. These schemes all require negative mass-energy or other exotic forms of energy. We have no theory of physics that predicts the existence of these forms of energy, and we don’t know how they would work.
Physicists who write papers about these things use neutral, professional language, like “exotic matter,” to describe this stuff, but it’s really pretty firmly in the realm of magical make believe.