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What scientists have learned from the biggest ever collision of black holes

What scientists have learned from the biggest ever collision of black holes

Summary

Scientists in the United States reported the largest-ever merger of two black holes, detected by gravitational wave observatories. This collision, recorded in November 2023, was shared at an international conference in the United Kingdom.

Key Facts

  • Scientists discovered the largest black hole merger using gravitational wave detectors.
  • The collision was observed on November 23, 2023, by LIGO detectors in Washington State and Louisiana.
  • The merger created gravitational waves detected briefly for 0.1 seconds and named GW231123.
  • The merging black holes were about 100 and 140 times the mass of the Sun, producing a new black hole over 265 times the Sun's mass.
  • This new black hole is larger than the previous biggest merger, GW190521.
  • Black holes are detected through gravitational waves because they absorb light and remain invisible.
  • Roughly 300 black holes have been found using gravitational waves.
  • The collision will not affect Earth or the Milky Way galaxy.

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