Never or else they would get sucked into it.
For all scientific reasons, no astronaut had went inside a black hole. It would take many earth years to visit the black hole, so reaching a black hole is impossible.
no one knows
No one has ever visited a black hole.
Most astronauts are a lot more careful than that. Nevertheless, if that were to happen, the gravitational pull of the black hole would either suck them in, never to be seen again, or else rip them apart.
no
No, no astronauts have disappeared into a black hole. Black holes are objects in space with such strong gravitational pull that not even light can escape from them. Human space exploration has not led to any incidents involving black holes.
No
No, it is not possible for an astronaut to be sucked into a black hole. Black holes are extremely far away and astronauts do not travel close enough to them. Additionally, the gravitational pull of a black hole is so strong that no known force or technology could overcome it.
Astronauts didn't discover black holes....
A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.
A black hole originated as a star, that is, the star converted to a black hole.
Yes, astronauts can visit the moon at any phase of the lunar cycle. The visibility of the moon's surface features may vary depending on the phase, but this does not prevent astronauts from landing or exploring the moon.