A space fish is usually called starfish.
What various kinds of fishes live in space? Starfish.
What ingredient is essential when baking a Star Wars cake?
Bicarbonate of Yoda
What do you call two celebrities who get into a gun fight?
One is a shooting star, and the other is a falling star.
What do you think the boy star told the girl star? I really glow for you.
What all kinds of stars wear the sunglasses? The movie stars.
Why did the police arrest the star? That’s becuase it was a shooting star.
Is that the Dog star? You can’t be Sirius!