ISRO releases graph of temperature variation of topsoil in lunar South Pole

Context: ISRO released a graph of the temperature variation on the lunar surface

  • measured by the Chandra’s Surface Thermophysical Experiment (ChaSTE) payload
  • measured the temperature profile of the lunar topsoil around the South Pole
  • A temperature probe equipped with a controlled penetration mechanism capable of reaching a depth of 10 cm beneath the surface.
  • The temperature was higher than expected at around 70℃ compared to expected range of 30℃ to 40℃.
  • It also shows a 50℃ variation for every 2-3 cm in contrast to hardly 2-3℃ variation on Earth.
  • Helps understand the thermal behaviour of the moon’s surface.
  • Prime Minister further announced that
    • the spot where Chandrayaan-3 Vikram lander touched down would henceforth be called ‘Shiv Shakti Point’
    • The site where the Chandrayaan-2 lander crash-landed on the Moon’s surface in 2019 would be known as ‘Tiranga Point’.
    • August 23 would be celebrated as ‘National Space Day’.

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