MadSci Network: Physics
Query:

Subject: Naturally occurring 'dry ice': Mars-yes; Earth-?

Date: Thu Mar 8 12:48:43 2007
Posted by Frank
Grade level: teacher/prof School: University of Maine
City: Orono State/Province: Maine Country: USA
Area of science: Physics
ID: 1173383323.Ph
Message:

CO2 freezes at -109.3F. (sea level atm. pressure). The coldest natural temp. 
ever recorded was in Antarctica at -128.56F., well below that.  Has naturally 
formed 'dry ice' ever been observed on Earth?  Thank you Frank Wihbey/ Orono, 
Maine/ frankw@umit.maine.edu


Re: Naturally occurring 'dry ice': Mars-yes; Earth-?

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