explain about black hole
Answers
" BLACK HOLES "
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.
MARK AS " BRAINLIEST " ANSWER
⇔ 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.
⇔ Since 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.
⇔ How Big Are Black Holes?
⇔ Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or "stuff," in an object.
⇔ Another kind of black hole can be up to 20 times more than the mass of the sun. There may be many, many black holes in Earth's galaxy, milky way.
⇔ Types of Blackholes:⇔ Basically, there are 3 types of black holes, viz, stellar, supermassive, and miniature black holes - depending on their mass. These black holes would have formed in different ways.
→ Stellar black holes form when a massive star collapses.
→ Supermassive black holes, which can have a mass equivalent to billions of suns, likely exist in the centres of most galaxies, including our own galaxy, the Milky Way. We don't know exactly how supermassive black holes form, but it's likely that they're a byproduct of galaxy formation. Because of their location in the centres of galaxies, close to many tightly packed stars and gas clouds, supermassive black holes continue to grow on a steady diet of matter.
→ No one has ever discovered a miniature black hole, which would have a mass much smaller than that of our Sun. But it's possible that miniature black holes could have formed shortly after the "Big Bang," which is thought to have started the universe 13.7 billion years ago. Very early in the life of the universe the rapid expansion of some matter might have compressed slower-moving matter enough to contract into black holes.
⇔ If Black Holes are "Black," How do scientists know they are here?
⇔ 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.
⇔ When a black hole and a star are close together, high-energy light is made. This kind of light can not be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.
⇔ Could a Black Hole destroy Earth?
⇔ 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 fall in. The black hole would have the same gravity as the sun. Earth and the other planets would orbit the black hole as they orbit the sun now.
⇔ The sun will never turn into a black hole. The sun is not a big enough star to make a black hole.
⇔ How is NASA studying Black Holes?
⇔ NASA is using satellites and telescopes that are traveling in space to learn more about black holes. These spacecraft help scientists answer questions about the universe.