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How deep is the ocean beneath the surface of Europa?

100-300 m

2-3 km

about 90 km

20,000 km

Like our planet, Europa is thought to have an iron core, a rocky mantle and an ocean of salty water. Unlike Earth, however, Europa's ocean lies below a shell of ice probably 10 to 15 miles (15 to 25 kilometers) thick and has an estimated depth of 40 to 100 miles (60 to 150 kilometers).

Ts

3

Marc Van Norden solarsystem.nasa.gov

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This is the aurora of Jupiter. What are the visible bright spots caused by?

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Who first described the heliocentric model of the Sun and planets? ( with the Sun in the center)

Nicolaus Copernicus

Claudius Ptolemy

Aristarchus of Samos

Which of Saturn's moons has such distinctive equatorial ridge?

What was the sacred border of Rome?