Looks like Darth Vader’s death star.
…afterwards.
So astronomers date spherules, do they? It’s not just lonely nights staring through telescopes!
hmmm…I’m gonna wait to see if Doug has any experience dating a spherule.
How 'bout it Doug! What are they like?
The Death Star has a dent in it.
How big are these things?
1/4 of a millimetre, it says in the screed.
Denny, that’s no way to talk about Doug’s wife!
ack 
I meant years ago…decades even!