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Posts Tagged "water on mars"

Life, Unbounded

Maybe Mars Seeded Earth’s Life, Maybe It Didn’t

mars clip

This week a major geochemistry conference heard an argument for life on Earth having originated on Mars, but does this hold up to scrutiny? The idea that a young Mars, some four billion years ago, was a far more hospitable and temperate place is not particularly controversial – although it is certainly not understood in [...]

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Life, Unbounded

Veins, not Flowers, on Mars

Light color mineral veins in martian rock - a strong clue to a water soaked past (NASA/JPL)

NASA’s Curiosity rover is preparing to drill for the first time, into what appears to be sedimentary rock criss-crossed by mineral-filled veins.         Back in September last year the Mars Science Laboratory carried by the rover found a rocky outcrop on the wall of Gale Crater that was full of a crusty [...]

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Life, Unbounded

A River Runs Through…Gale Crater

Close up of the crusty stream bed, a larger 'clast' is circled (NASA/JPL-Caltech/MSSS)

It’s one thing to spot stuff from orbit above an alien world, quite another to get in close. Earlier Mars Reconnaissance Orbiter imagery of Gale Crater, now home to NASA’s Curiosity rover, had shown signs of what appeared to be something akin to an ‘alluvial fan’ spreading downwards from the crater rim. It was extremely [...]

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Life, Unbounded

Old Briny: Mars, water, and the search for life

Northern polar ice cap of Mars (NASA/Mars Global Surveyor)

Let’s get something clear right away, Mars has lots of water on and close to its surface. Over the years we’ve seen an increasing number of measurements and discoveries that indicate very significant reservoirs of martian water. The catch, and there is a big one, is that this water is frozen. It’s not surprising; Mars [...]

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