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View Full Version : Mars Has Been Cold for Billions of Years



Fraser
2005-Sep-07, 06:39 PM
SUMMARY: With the evidence turned up by the Mars Exploration Rovers, the Red Planet was once warm enough to have liquid water flowing on its surface. But according to researchers at MIT that period happened a long time ago; more than 4 billion years ago, in fact. The team analyzed the amount of argon in various Martian meteorites. Since argon known to leak out of rocks at different rates depending on the temperature. they were able to provide this estimate for the age of the Martian deep freeze.

View full article (http://www.universetoday.com/am/publish/so_cool_mars_4_billion_year_freeze.html)
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