Ahhh, another year, another humiliation for the Astronomy Department. This year we posted a paper insulting to Astronomy Department graduate students to the astrophysics preprint server, arXiv. Every night at 10PM the abstracts for all the papers submitted to the preprint server that day get emailed to many astronomers around the world.
The Astronomy department responded with a paper of their own. Leave it to Steward grads to come up with an unoriginal April fools day prank and then to do it on April 2nd.
This year's April Fools pranks had other components as well, with some interesting upcoming colloquia, a sign draped from the Steward Observatory dome, and the resignation of the Head and Director.