December 4 , 2019
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	- For the first time, scientists of NASA have discovered the presence of water vapor above the surface on Europa, the Jupiter’s icy moon.
- The water vapor was measured through one of the world’s biggest telescopes in Hawaii.
- It was first reached by one of the Voyager missions in 1979.
- Jupiter has 79 known moons.
- Jupiter is the fifth planet from the Sun and the largest in the Solar System.
 
                            
                                
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