Question

${}\large{ \underline{ \pink{Answer \: these \: Questions:-}}} \\ \\ 1)what \: is \: black \: hole? \\ 2)why \: black \: hole \: is \: called \: black \ \\ hole?\\3)Can \: we \: come \: out \: of \: blackhole\: \\ if \: we \: go \: in \: it?Why/ why \: not?$

Answer 1

$\huge\underline\mathrm\red{Answer:-}$

• Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star’s outer layers are blown away. The crushing weight of constituent matter falling in from all sides compresses the dying star to a point of zero volume and infinite density called the singularity.

• It is called "black" because it absorbs all the light that hits it, reflecting nothing, just like a perfect black body in thermodynamics. Under the theory of quantum mechanics black holes have a temperature and emit Hawking radiation, which makes them slowly get smaller.

• No light of any kind, including X-rays, can escape from inside the event horizon of a black hole, the region beyond which there is no return.

Answer 2

Answer:

1. A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
2. It is called "black" because it absorbs all the light that hits it, reflecting nothing, just like a perfect black body in thermodynamics. Under the theory of quantum mechanics black holes have a temperature and emit Hawking radiation, which makes them slowly get smaller.
3. The gravitational pull of a black hole is so strong that nothing, not even light, can escape once it gets too close. However, there is one way to escape a black hole — but only if you're a subatomic particle.