How do Astronauts screw in a lightbulb?

They don't: They screw in a vacuum.

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Lightbulb Jokes More Lightbulb Jokes

How many homophones does it take to change a lightbulb?

Nun.

How many Mexicans does it take to change a lightbulb?

Juan (This probably has been posted earlier but is still funny)

Screw Jokes More Screw Jokes

How many Development Executives does it take to screw in a light bulb?

Well first let's talk about the concept behind this whole "light bulb" thing.

How does an engineer screw a light-bulb?

He holds the light-bulb over the socket and waits for the world to revolve around him.

Astronaut Jokes More Astronaut Jokes

Why can't astronauts stay in a long term relationship?

They need space.

What do you call a donut that is out of this world?

Astronaut-----

Vacuum Jokes More Vacuum Jokes

What's the difference between a vacuum cleaner and a Harley Davidson?

The vacuum has the dirtbag on the inside.

Why is outer space so clean?

It's a vacuum!