|The Moon is three times larger than ____.
|Nicolaus ____ proved that the planets orbit the Sun.
|The ____ comet was discovered in 1995.
|The ____ comet can be seen about every 75 years.
|____ is the hottest planet due to a runaway greenhouse effect.
|____ orbits between Jupiter and Neptune.
|The only dwarf planet in the asteroid belt is ____.
|The Great Red Spot is a persistent storm on ____.