Europa is primarily made of silicate rock and has a water-ice crust and probably an iron-nickel core. It has a very thin atmosphere, composed primarily of oxygen. Cracks and streaks striate its surface, but craters are relatively few.
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With an equatorial diameter of 1,940 miles (3,100 kilometers), Europa is about 90% the size of Earth's Moon. So if we replaced our Moon with Europa, it would ...
Europa has the smoothest surface of any solid body in the Solar System; Its icy surface may hide a buried ocean full of more water than Earth; The European ...
Europa has one of the most unique and beautiful surface appearances. The water-ice surface has long linear fractures that criss-cross each other. It also has ...
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