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Sagittarius A*

Sagittarius A*:

Astronomers have recently discovered a young star in the violent and tortured environment around the supermassive black hole at the core of the Milky Way galaxy, known as Sagittarius A* (Sgr A*).

  • Sagittarius A* (Sgr A*)  is a supermassive black hole located at the center of the Milky Way Galaxy.
  • It is located in the constellation Sagittarius.
  • It has a mass equivalent to four million Suns.
  • It has a diameter of around 5 million kilometers .
  • It is mostly dormant and only occasionally absorbs gas or dust.
  • The event horizon of the black hole has a radius of 12 million km.
  • A black hole is a region 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.
  • Because no light can get out, it is difficult to detect a black hole.