Q: What's a space pirate's favorite planet?
Q: How do you tell the difference between male chromosomes and female chromosomes?
A: Pull down their genes!
Q: Why can't you trust atoms?
A: Because they make up everything.
Q: Why is Neil deGrasse Tyson such a famous physicist?
A: On the day he was born he escaped a black hole.
Q: Why don't people like talking to Pi?
A: When you ask his full name he goes on forever.