Astronomy Jokes

My wife says she’s leaving me because she thinks I’m too obsessed with astronomy.
What planet is she on?!
What do you call a clock on the moon?
A lunartick.
Are you an exoplanet? Because I’m bad at astronomy and pick up lines.
I thought about studying the astronomy for my university. But then I thought, I would just be taking up space.
My wife says she’s leaving me because she thinks I’m too obsessed with astronomy.
What planet is she on!