Using NASA, Japanese, and European X-ray satellites, a team of Japanese astronomers has discovered that our galaxy's central black hole let loose a powerful flare three centuries ago.
The finding helps resolve a long-standing mystery: why is the Milky Way's black hole so quiescent? The black hole, known as Sagittarius A* (pronounced "A-star"), is a certified monster, containing about 4 million times the mass of our Sun. Yet the energy radiated from its surroundings is billions of times weaker than the radiation emitted from central black holes in other galaxies.
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| ©NASA/CXC/MIT/Frederick K. Baganoff et al.
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| This Chandra image shows our Galaxy's center. The location of the black hole, known as Sagittarius A*, or Sgr A* for short, is arrowed.
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Comment: Just wait....