Black holes by (1A22) SO CHAK PAN ETHAN https://padlet.com/s230904_5/7v5623imp6b1lhue Most interesting objects in astronomy en-us 2023-09-19 14:10:42 UTC 2023-09-19 14:24:27 UTC hello@padlet.com What is a black hole? s230904_5 https://padlet.com/s230904_5/7v5623imp6b1lhue/wish/2710929355 Black holes are objects in our universe that are known for their very strong gravity. The gravity of a black is so strong that no object (e.g. stars) or light can escape from it. They are very massive objects that have a mass of 10 times to a few billion times the mass of our Sun.]]> 2023-09-19 14:13:09 UTC https://padlet.com/s230904_5/7v5623imp6b1lhue/wish/2710929355 Formation of Black Holes s230904_5 https://padlet.com/s230904_5/7v5623imp6b1lhue/wish/2710936968 There are several ways in which black holes are formed. But most of the black holes are formed when a large star dies. When a large star consumes all of its nuclear fuel, it starts to collapse. Then suddenly it bursts into the universe’s most powerful explosion, called a supernova.

After the supernova, the remaining core of the star undergoes a sudden collapse due to its own gravity. The matter is compressed so much that its density reaches to infinity at the center, and a black is formed.

]]> 2023-09-19 14:16:47 UTC https://padlet.com/s230904_5/7v5623imp6b1lhue/wish/2710936968 Properties of a Black Hole s230904_5 https://padlet.com/s230904_5/7v5623imp6b1lhue/wish/2710942720 Black holes can’t be seen directly with naked eyes or telescopes, because light can’t escape its immense gravity. Scientists find black holes by observing light and objects that surround it. Black holes are perfect spheres and are featureless objects. But they may have a charge which is found when a black hole repels like-charges and attracts opposite charges.]]> 2023-09-19 14:19:54 UTC https://padlet.com/s230904_5/7v5623imp6b1lhue/wish/2710942720 Facts s230904_5 https://padlet.com/s230904_5/7v5623imp6b1lhue/wish/2710944013
  • The largest black hole in our universe has a mass of 66 billion times the mass of our Sun.
  • Stephen Hawking has found that black holes also emit certain radiation called Hawking radiation. Due to this fact, black holes have a limited lifespan and they also evaporate.
  • Supermassive black holes have the mass of several billion times the mass of our Sun. It is considered that supermassive black holes are present at the center of galaxies.

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