<Tr> <Th_colspan="2"> Atmosphere </Th> </Tr> <Tr> <Th> Surface pressure </Th> <Td> 0.1 μPa (10 bar) </Td> </Tr> <P> Europa / jʊəˈroʊpə / (listen) yoor - OH - pə, (Jupiter II), is the smallest of the four Galilean moons orbiting Jupiter, and the sixth - closest to the planet . It is also the sixth - largest moon in the Solar System . Europa was discovered in 1610 by Galileo Galilei and was named after Europa, the legendary mother of King Minos of Crete and lover of Zeus (the Greek equivalent of the Roman god Jupiter). </P> <P> Slightly smaller than Earth's Moon, Europa is primarily made of silicate rock and has a water - ice crust and probably an iron--nickel core . It has a tenuous atmosphere composed primarily of oxygen . Its surface is striated by cracks and streaks, whereas craters are relatively rare . In addition to Earth - bound telescope observations, Europa has been examined by a succession of space probe flybys, the first occurring in the early 1970s . </P>

Where is europa located in the solar system
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