3 ms·
It depends on what you mean by "inside" a black hole. If this means "inside the event horizon", well, if the black hole is big enough, you can put yourself in
by antimagic 11y ago
It depends on what you mean by "inside" a black hole. If this means "inside the event horizon", well, if the black hole is big enough, you can put yourself in orbit around it relatively easily, you'll just never be able to achieve escape velocity. If you take the Earth for example, a geosync orbit has a velocity of 3.07km/s, whereas escape velocity is 11km/s
- dvdkhlng 11y agoThere aren't any stable orbits within the event horizon of a black hole (due to General Relativity): https://en.wikipedia.org/wiki/Schwarzschild_metric#Orbital_motion https://en.wikipedia.org/wiki/Schwarzschild_metric#Orbital_m...
- antimagic 11y agoNot so, only one of the two solutions is unstable: https://en.wikipedia.org/wiki/Schwarzschild_geodesics#Circular_orbits_and_their_stability https://en.wikipedia.org/wiki/Schwarzschild_geodesics#Circul... Also, this applies only to circular orbits, and does not indicate that a powered ship could not maintain orbit.
- repsilat 11y agoThose orbits are all outside the event horizon. Inside it, all you can hope to do is fall inward as slowly as possible.
- dvdkhlng 11y agoBTW most of what I know about black hole physics is from Greg Egan's novel "Incandescence". Which covers quite a lot of science for a work of fiction (and overall extremely inspiring). http://gregegan.customer.netspace.net.au/INCANDESCENCE/Incandescence.html http://gregegan.customer.netspace.net.au/INCANDESCENCE/Incan...