Mars Images Reveal Evidence of Ancient Lakes

Matt_dk writes "Spectacular satellite images suggest that Mars was warm enough to sustain lakes three billion years ago, a period that was previously thought to be too cold and arid to sustain water on the surface, according to research published today in the journal Geology. Earlier research had suggested that Mars had a warm and wet early history but that between 4 billion and 3.8 billion years ago, before the Hesperian Epoch, the planet lost most of its atmosphere and became cold and dry. In the new study, the researchers analysed detailed images from NASA’s Mars Reconnaissance Orbiter, which is currently circling the red planet, and concluded that there were later episodes where Mars experienced warm and wet periods."

Comments

Re:At the risk of being serious...

[neo-mkrey]

All these worlds are yours, except Europa, attempt no landing there...

Re:How do they determine those dates?

[ArsonSmith]

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Universal health care is a good thing. It's not socialist. Get over it.

Sorry to post off topic to your sig, but universal helthcare is socialist. whether or not it is a good thing remains to be seen.