Answer: the space bar
Creative Commons License. Used with permission
Artist has lots of library promotional artwork on her Flickr website. Flickr ID: Enokson
Why can't astronauts trust the law of gravity?
Because it always lets you down.
Tastes awful no good.
How many astronauts does it take to change a lightbulb? Just one. He holds the bulb, and the world revolves around him.
What do you call a robot in space?A Robonaut. What do you call space fleas?Lunar-tics.What do you call an space insect?Astro-gnat.
How do spacemen pass the time on long trips?
Answer 1: They play astronauts and crosses! (naughts and crosses is a British game) and Moon-opoly.