Astronomy Jokes

My wife says she’s leaving me because she thinks I’m too obsessed with astronomy.
What planet is she on!
Are you an exoplanet? Because I’m bad at astronomy and pick up lines.
What do you call a clock on the moon?
A lunartick.
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?!