What holds the moon up?
Moonbeams.

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What did the man do after being found guilty of sabotaging the moonmission?
He Apollo-gized.

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How do you know when the moon is going broke?
When it's down to its last quarter.

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What do you get when you take green cheese and divide its circumference by its diameter?
Moon pi.

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What do you call a clock on the moon?
A luna-tick.

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How does a man on a moon get his haircut?
Eclipse it.

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Did you hear about the restaurant on the moon?
It has great food, but no atmosphere.

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After the Americans went to the Moon, Leonid Brezhnev announced that the Soviets would be sending a man to the Sun.
The engineers objected. "If you send a man to the Sun, he will burn up!"
"What do you think I am, stupid?" he replied. "We'll send him at night!"