A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can’t see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.
In their final stages, enormous stars go out with a bang in massive explosions known as supernovae. Such a burst flings star matter out into space but leaves behind the stellar core. While the star was alive, nuclear fusion created a constant outward push that balanced the inward pull of gravity from the star’s own mass. In the stellar remnants of a supernova, however, there are no longer forces to oppose that gravity, so the star core begins to collapse in on itself.
If its mass collapses into an infinitely small point, a black hole is born. Packing all of that bulk many times the mass of our own sun into such a tiny point gives black holes their powerful gravitational pull. Thousands of these stellar-mass black holes may lurk within our own Milky Way galaxy.
Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole’s gravity. And anything that ventures too close be it a star, planet, or spacecraft will be stretched and compressed like putty in a theoretical process aptly known as spaghettification.
Types of Black Hole
There are four types of black holes as follows:
The commonly known way of how a black hole is formed is by stellar death. As stars reach the end-stage of their lives, most will lose mass, will inflate, and cool to create a white dwarf. But the largest of these, those 10 times or 20 times more massive than the Sun are destined to become either a super-dense neutron star or the stellar-mass black holes.