Who’s There?

Deep space is very serious
Research is being done
But up to now no studies have discovered any fun
Experimental data show
A nothing on a graph
No pan-galactic sonic mission ever heard a laugh
The comics must be further off
What planet would they be on
They might be taking time to send a joke they all agree on
It takes a hundred years to hear
From such a distant void
Knock knock would make a lot of astrophysicists annoyed