Cameron Diaz teaches Robot IR-2 (Ed Wasser) how astronomers can measure the mass of asteroids from tremendous distances.

Ask an Astronomy Brain Parasite: Why are astronauts weightless in space?

It's the series Aint-It-Cool-News calls ''the most (intentionally) hilarious series of educational films you'll find...the pieces carry a Muppets-esque charm.'' Alan Dyer at Discovery.com says it's ''a lot of fun, and breaks the mold for NASA videos.'' Recently a top-10 finalist for ''Best Science/Technology Podcast'' at the 2008 Podcast Awards, IRrelevant Astronomy is packed with CG animation and snarky humor, all wrapped around the latest astronomy news and science from NASA's Spitzer Space Telescope. It's infrared-relevant!