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Which planet had the Great Dark Spot in 1989, but had lost it by 1995?

In brightness, Jupiter is second only to the planet __________ most of the time.

All nine planets in the solar system have been visited by spacecraft.

Much of the water on Mars

Essentially, the Great Red Spot is

Methane absorbs red light readily, so we would expect a planet with a mostly methane atmosphere to appear blue.

Jupiter and the other jovians are noticeably oblate because:

The two outer jovians appear bluish in color because:

Saturn is more dense than water.

Running water continues to be the major erosive factor of Mars today.