What do you call an alien with three eyes?

An aliiien!!

What do you get if you cross a cricket ball and an alien?

A bowling green!

How do you get a baby astronuat to sleep?

You rocket!

Where do astronauts keep their sandwiches?

In a launch box!!

What's a spaceman's favourite game?

Astronauts and crosses!

What is an astronaut's favourite part of a computer?

The spacebar!!

What do comets say to each other when they meet?

"Pleased to meteor!!"

What do you get if you cross Santa Clause with a space ship?

A u-f-ho ho ho!!

One astronaut turns to the other and says, "I'm really hungry!"

The second astronaut says, "I'm not surprised! It's nearly launch time!!"

How do you see flying saucers?

Trip up a waiter!!