Question

what are black holes? is time travel is possible through black holes

Answer 1

black holes black holes are the objects on are the dimensions which absorbs everything in a black hole there are millions and millions of sons can be observed I mean Sun our stars of solar system Yash according to Stephen Hawking in Black hole Time Travel is possible because in Black hole the time is Travels by is half Street means on Earth if there are 2 years boys then in Black hole only there is one year passed sau Time Travel is possible in black holes ...

Answer 2

black hole is a region of spacetimeexhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.[1] The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.[2][3] The boundary of the region from which no escape is possible is called the event horizon. Although the event horizon has an enormous effect on the fate and circumstances of an object crossing it, no locally detectable features appear to be observed.[4] In many ways a black hole acts like an ideal black body, as it reflects no light.[5][6] Moreover, quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe.