Mars Drops Hints of an Active Past Involving Water

By tasting a little bit of the

Phoenix was the most recent spacecraft to land on Mars and

From that data mine, researchers discovered that the carbon

"We think of Mars as cold and

When combined with studies of 4-billion-year-old Martian

Unexpected activity

Niles warned that it is hard to judge from the data how much

"That could be the result of a lot of groundwater

The carbon dioxide in the atmosphere of Mars is mostly derived

"All these results suggest that Mars is more active

Isotopes tell watery tale

Niles and his colleagues used Phoenix's observations of

Isotopes are versions of a chemical element that have

Phoenix gathered carbon dioxide from the atmosphere and then

The research is detailed in the

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