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 Why in News

  • Scientists have estimated the icy crust of Jupiter’s moon Europa to be at least 20 km thick by simulating the formation of its multi-ring impact structures. 

  • The researchers modelled various sizes of impacts on Europa, with different ice shell thicknesses and thermal gradients

  • From these simulations, they found that impacts caused graben-like features to form only when the ice shell was at least 20 km thick

  • The findings could inform future space missions that will investigate the habitability of Europa.


  • Europa is one of the most fascinating moons in our solar system. 

  • It's the fourth-largest moon orbiting Jupiter, and the sixth-largest moon overall

  • It was discovered by Galileo Galilei in 1610, along with the other three large moons of Jupiter known as the Galilean moons.

  • Europa is a bit smaller than Earth's moon, but it is still a very large moon, with a diameter of about 1,940 miles (3,100 kilometers). 

  • Its surface is made of water ice, which gives it a very bright and reflective appearance

  • In fact, Europa reflects more sunlight than any other object in the solar system except for Io, another moon of Jupiter



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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Europa UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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