TNPSC Thervupettagam

LIGO second wave detection

January 11 , 2020 1782 days 1315 0
  • The LIGO (Laser Inferometer Gravitational-wave Observatory) detected gravitational waves due to collision of two neutron stars.
  • This is the second time the gravitational waves are being detected.
  • Neutron stars are the remnants of giant stars that died in a fiery explosion known as a supernova.
  • They have a mass of about 1.4 times that of the sun.
  • The neutron stars were at a distance of 520 million light years from the earth.

LIGO

  • It is a massive observatory for detecting cosmic gravitational waves and for carrying out experiments.
  • Currently LIGO operates three gravitational wave detectors at Livingston, Louisiana and Hanford at USA.
  • LIGO India will come up in Maharashtra.
  • LIGO - India project is piloted by Department of Atomic Energy (DAE) and Department of Science and Technology (DST).

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