What time do spacemen get up? Alien in the morning.
How do you organise a welcome party for an alien race?
You planet.
What is a lightyear?
The same as a regular year, but with less calories.
What do you call a wizard aboard a spacecraft?
A flying sorcerer.
What will you do if you come across a green alien? I’ll simply wait until it’s ripe.
Have you heard the one about the spaceship that came to Earth?
Never mind its over your head.
Why don't aliens get hungry after being blasted into space?
Because they've just had a big launch.
How did the aliens hurt the farmer?
They trod on his corn.
What do you call an alien spaceship that goes from planet to planet to planet? A UF-hoe.
Have you heard the one about the spaceship that came to Earth?
Never mind its over your head.
How will you save yourself if you come across an aggressive alien? Give him some space.
What do you call an alien with three eyes?
An aliiien.
What do you call an alien spaceship that's leaking water?
A crying saucer.
Where do aliens park their flying saucers?
At a parking meteor.
What do aliens prefer to drink?
Gravi-tea.
What do you call an overweight alien?
An extra cholesterol.
What's E.T. short for?
Because he's got little legs.
How do you get a baby alien to sleep?
Rocket.