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NASA is using sattelites and telescopes that are traveling in space to learn more about black holes.
These spacecrafts help scientists awnser questions about the Universe.
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A black hole is a place in space here 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. Spa...
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting, a black hole....
Scientists think the smallest black holes formed when the universe began.
Stellar black holes are made when the center of a very big star falls in upon itself, or collapses. When this happens, it causes a supernova. A supernova is an exploding star that blasts part of the star into space.
Black holes do not go around in space eating stars, moons and planets. Earth will not fall into a black hole because no black hole is close enough to the solar system for Earth to do that.
Even if a black hole the same mass as the sun were to take the place of the sun, Earth still would not...
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Also, basically everything you've ever read about black holes, is about theoretical black holes that aren't spinning, because their math is so much easier.
Black holes are particles which have huge gravitational power, almost 1000 times that of the earth or any other planet. Scientists say that if you put anything in front of a black hole, it's going to suck that thing immediately, within a fraction of seconds.
Black holes cannot be seen as they don't reflect any light.
The centre of black hole is called singularity - a point of infinite density i.e the space curvature extends to infinity.
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