Constellation jokes
How do astronomers organize a party? They planet.
Yo hairline so ugly, it looks like a newfound constellation.
What constellation has no hair at all?
Cancer.
So the other day, I was looking up zodiac sign stuff, you know, I'm a real big fan of that, and I come across this thing and it’s like all zodiac signs have their own hairstyles... except Cancer.
Girl: How much do you love me?
Me: Count the stars in the sky.
Girl: Aww, it's infinite!
Me: No, just a waste of time.
What do planets like to read? Comet books!
How does NASA organize a party? -- They planet.
Astronomers got tired of watching the moon rotate around the earth for 24 hours, so they just called it a "day".