how are black holes created

Question: how are black holes created
- Keywords:
  black holes,
  space
Asked by anon-264706 on 19 Oct 2020.
- Siti Syuhaida Mohamed Yunus answered on 19 Oct 2020:
  
  Stellar black holes are made when the centre of a massive 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. Scientists think supermassive black holes were made at the same time as the galaxy they are in (NASA, 2018).
- James Smallcombe answered on 19 Oct 2020:
  
  In addition to Siti’s answer, a black hole might also be formed when two neutron stars (super dense stars created when stars weren’t quite big enough to make black holes) get close and merge together.
  This process of neutron star mergers is so intense it’s one of the only events we have successfully observed gravitational waves from https://en.wikipedia.org/wiki/Neutron_star_merger

anon-264706 commented on 24 Oct 2020:

Thanks for the help and the interesting information.

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Question: how are black holes created