The masses of black holes vary greatly. The lowest mass stellar black holes are about 3 times the mass of the sun. The most massive black holes are about 12 billion times the sun's mass.
It really depends on the black hole itself. It could even have a mass that's less than the sun, or it could have a mass that's millions of times more massive than the sun.
The death of any star greater than about 5 times the mass of our Sun is likely to result in a black hole.
A star must be at least 25 times the mass of the sun to form a black hole, though only a fraction of that mass is incorporated into the black hole.
millions and millions times the mass of our own sun
Don't know which black hole.
A white dwarf is the last stage of stellar evolution for stars with masses similar to our Sun. A black hole, on the other hand, is the last stage of stellar evolution for stars having very large masses, many times greater than that of the Sun. Consequently, very few stars end up as black holes. Additionally, black holes have an escape velocity greater than the speed of light, while a white dwarf's escape velocity is less than the speed of light.
The Black Hole of Auschwitz has 187 pages.
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.
Basically none. No atom will survive the forces in a black hole. (However, all the mass that falls into the black hole will still be there.)
Nothing, unless a black hole comes very near to us. By the way, you shouldn't say "the" black hole, unless you make it clear which black hole you mean. There are many black holes.
Black holes do slowly "evaporate" through something called Hawking Radiation. The process is extremely slow and the bigger the black hole the slower it becomes. A black hole the mass of the sun would take about 2x10^67 years to disappear, which is many orders of magnitude greater than the age of the universe.
How many times greater is five thousand than fifty
Nobody has ever been to a black hole. Nobody has ever gone farther from Earth than the moon. The nearest known black hole is many times farther away, much farther than we could travel. Even then, any person approaching a black hole would be torn apart by tidal forces before reaching the event horizon.