Who says there's no humor in science? (Apr 1, 2010)

Current mood: amused

In honor of April Fools Day, Astronomy Picture of the Day has posted its annual photo-of-THIS-day:

Evidence Mounts for Water on the Moon http://antwrp.gsfc.nasa.gov/apod/ap100401.html

But don't forget:
Astronaut's Head Upgraded During Spacewalk http://antwrp.gsfc.nasa.gov/apod/ap090401.html
New Space Station Robot Asks to be Called "Dextre the Magnificent" http://antwrp.gsfc.nasa.gov/apod/ap080401.html
Americans Defeat Russians in First Space Quidditch Match http://antwrp.gsfc.nasa.gov/apod/ap070401.html
Hubble Resolves Expiration Date For Green Cheese Moon http://antwrp.gsfc.nasa.gov/apod/ap060401.html
Water On Mars http://antwrp.gsfc.nasa.gov/apod/ap050401.html
April Fools Day More Intense On Mars http://antwrp.gsfc.nasa.gov/apod/ap040401.html
A New Constellation Takes Hold http://antwrp.gsfc.nasa.gov/apod/ap030401.html (my personal favorite of the set)
Ski Mars! http://antwrp.gsfc.nasa.gov/apod/ap990401.html
Astronaut Kicks Lunar Field Goal http://antwrp.gsfc.nasa.gov/apod/ap980401.html

The archive actually does go back to sometime in 1995, but they didn't get into the humor back then. Even after they did, they didn't do it every year. Here are a few other interesting, though serious, April 1 APOD entries:
TIROS 1, the first weather satellite http://antwrp.gsfc.nasa.gov/apod/ap000401.html
Hale-Bopp and Andromeda http://antwrp.gsfc.nasa.gov/apod/ap970401.html
Comet Hyakutake, Big Dipper, and Observatory Dome http://antwrp.gsfc.nasa.gov/apod/ap960401.html

The 2001 and 2002 entries were revised for 2006 and 2007.