Neil deGrasse Tyson -- The Crappiest Job I've Ever Had Was ...

EXCLUSIVE

Long before Neil deGrasse Tyson was an astrophysicist ... Neil deGrasse Tyson was an asstrophysicist.

The famed scientist and host of "Cosmos: A Spacetime Odyssey" was out in New York Wednesday when we asked about the best and worst jobs he's ever had -- and boy does he have some stories to share.

Check the video ... Tyson gives Mike Rowe a run for his money.

Here's a hint: Tyson's been an expert on Uranus for longer than he'd like to admit.