Researcher's works on the edge of unknown and undiscovered, where every information goes through the path of uncertainty. These uncertainties then give rise to the dark world of unanswered questions.
This is Now You Know and in today's video we will tell you what is a black hole?
A black hole is a region in space which has so much gravity that even light can't go outside. Gravity is so strong, because matter has become compressed into a small space. It generally happens when a star dies.
Because no light can get there, people can't see a black hole. They're invisible. Special methods may be used to search black holes with space telescopes. The special tools will see how stars near to black holes behave differently.
A black hole is not visible since a heavy gravity draws all the light in the core of the black hole
A very powerful light is produced when a black hole and a star are close together. The human eyes cannot see this kind of light. In order to see high energy rays, physicists use satellites and telescopes in space.
The smallest black holes are considered by physicists to be as small as an electron. These black holes are very small but have a huge mountain mass. Mass is the quantity of matter in an object, or "stuff,"
The "stellar." is another type of black hole; its mass may be up to 20 times larger than the sun's weight. In the galaxy of Earth there will be several star mass black holes.
These black holes have masses which together are more than 1 million suns. The biggest black hole are the 'supermassive.' Scientists have discovered evidence that a supermassive black hole is at the core in every large galaxy.
Sagittarius is considered the supermassive black hole in the center of the Milky Way galaxy. It has about 4 million suns and falls inside a very wide ball, which can fit several million Earths inside it.
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