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Pluton is smaller than many moons in the solar system.

Prominence are extensions of the solar magnetic fields above sunspots.

All four ring systems orbit the equators of Jovian planets outside their Roche limits.

The haphazard terrain of Miranda suggests it was broken up by impact after it had differentiated, then fell back together as a jumbled maze.

Pluto’s density is most similar to

Of the Jovian satellites, which shows the oldest, most cratered surface?

What is thought to be the cause of Io’s volcanoes?

The only large Jovian moon to orbit its planet retrograde and out of the equatorial plane is __________ .

Which of the Galilean moons is densest and most geologically active?

The pattern of hot convective cells rising in the photosphere is called ___________.