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  • Vaid's ICS, Lucknow
  • 26, Jul 2021
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Why in News?

The Union Home Minister has recently  launched the Green Sohra Afforestation Campaign at Sohra (Cherrapunji).

He also inaugurated the Greater Sohra Water Supply Scheme.

Key Facts:

  • The entire area of ​​Cherrapunji is going to be adopted by Assam Rifles for the purpose of plantation.
  • Cherrapunji, also known as Sohra is a subdivisional town in the East Khasi Hills district in the Indian state of Meghalaya.
  • It is the traditional capital of ka hima Sohra (Khasi tribal kingdom).
  • Sohra has often been credited as being the wettest place on Earth, but for now nearby Mawsynram currently holds that distinction.
  • It still holds the all-time record for the most rainfall in a calendar month and in a year.
  • Sohra receives rains from the Bay of Bengal arm of the Indian summer monsoon.

Facts for Prelims:

PDS 70:

Scientists for the first time have spotted a moon-forming region around a planet beyond our solar system – a Jupiter-like world surrounded by a disc of gas and dust massive enough that it could spawn three moons the size of the one orbiting Earth.

  • The researchers used the ALMA observatory in Chile’s Atacama desert to detect the disc of swirling material accumulating around one of two newborn planets seen orbiting a young star called PDS 70, located 370 light years from Earth.
  • A light year is the distance light travels in a year, about 5 trillion km.
  • More than 4,400 planets have been discovered outside our solar system, called
  • No circumplanetary discs had been found until now because all the known exoplanets resided in “mature” – fully developed – solar systems, except the two infant gas planets orbiting PDS 70.
  • The orange-coloured star PDS 70, roughly the same mass as our Sun, is about 5 million years old.
  • The two planets are even younger. Both planets are similar (although larger) to Jupiter, a gas giant. It was around one of the two planets, called PDS 70c, that a moon-forming disc was observed.