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June 20, 2008
Discovery of ice on Mars announced first on Twitter
Twitter / MarsPhoenix:
Whoohoo! Was keeping my eye on some chunks of bright stuff & they disappeared! Sublimated! So it can't be salt, it's ice: http://is.gd/lFa about 3 hours ago from web
Are you ready to celebrate? Well, get ready: We have ICE!!!!! Yes, ICE, *WATER ICE* on Mars! w00t!!! Best day ever!! about 3 hours ago from web
The animation shows ice melting on Mars: Extraterrestrial water.

NASA/JPL-Caltech
NASA (Bright Chunks at Phoenix Lander's Mars Site Must Have Been Ice) explains that it was found
at the bottom of a trench informally called "Dodo-Goldilocks" when Phoenix's Robotic Arm enlarged that trench on June 15, during the 20th Martian day, or sol, since landing. Several were gone when Phoenix looked at the trench early today, on Sol 24.
Twitter is a free microblogging service launched as a way to answer the question, "What are you doing?" in "tweets" of 140 characters or less. You can subscribe to Twitter feeds such as this one, viewing the updates on your cell phone or computer.
Posted by Sheila Lennon
at 12:18 AM | Permalink