New Group of Stars

March 13, 201913 days 730
  • Researchers from Thiruvananthapuram and Mumbai have identified a new population of ultraviolet stars in the globular cluster NGC 2808 using Indian multi-wavelength space observatory AstroSat.
  • Globular clusters are collections of thousands to millions of stars, moving as one unit.

  • These stars are tightly held together by gravity of the cluster, and are believed to have formed together at roughly the same time.
  • NGC 2808 is one of the most massive globular clusters that we know of, and is located at a distance of 47,000 light years from us.
  • This cluster was observed by the team of researchers using the Ultra Violet Imaging Telescope (UVIT) on-board AstroSat.

Astrosat

  • Astrosat is India’s first multi-wavelength space observatory.
  • It was launched on a PSLV-XL on 28 September 2015.
  • With the success of this satellite ISRO has proposed to launch AstroSat-2 as a successor for Astrosat when nears its five-year life span.
  • This mission has put ISRO in a very exclusive club of nations that have space-based observatories.
  • Only the United States, European Space Agency, Japan and Russia have such observatories in space.

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