TNPSC Thervupettagam

Light Pollution

April 24 , 2021 1185 days 1020 0
  • The Researchers recently found that Light pollution from satellites 'poses threat' to astronomy.
  • Artificial satellites and space junk orbiting the Earth can increase the brightness of the night sky.
  • The overall brightness of the night sky will be increased by more than 10 per cent above natural light levels across the planet.
  • Such light pollution could hinder astronomers’ ability to make observations of our universe.
  • There are more than 9,200 tonnes of space objects in orbit around the Earth.
  • The space junk not only poses a collision risk but, together with other space objects, is contributing to light pollution.
  • The sunlight, reflected and scattered from space objects, can appear as streaks in observations made by ground-based telescopes.
  • This research is the first to assess the overall impact of space objects on the night sky.
  • Earlier the effect of individual satellites and space debris affecting astronomers' images of the night skies was analysed.
  • The researchers belong to the Comenius University in Slovakia.

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