TNPSC Thervupettagam

Planet LTT9779 b

July 22 , 2023 494 days 453 0
  • Astronomers have found the most reflective planet ever discovered using data from the European Space Agency’s (ESA) Cheops satellite.
  • The planet has a thick layer of reflective metal clouds, essentially turning it into a gigantic mirror when viewed by observatories.
  • The newly-discovered LTT9779 b, planet reflects a massive 80 per cent of the light it receives from its host star.
  • Venus has a thick cloud layer that reflects about 75 per cent of the Sun’s light.
  • The Earth only reflects around 30 per cent of the incoming sunlight.
  • This exoplanet is about the size of Neptune.
  • The metallic clouds are mostly made of silicate.
  • There are also other metals like titanium mixed into the clouds.
  • The blazing-hot exoplanet is so close to its host star that it completes an orbit in less than a day.
  • LTT9779 b can form metallic clouds despite being so hot because the atmosphere is oversaturated with silicate and metal vapours.

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