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Posts Tagged "life on mars"

Life, Unbounded

Rock-Eating Martian Microbes?

(Credit: White et al. 2014, NASA/JPL)

A recently published study of a 30-pound martian meteorite found in Antarctica suggests the presence of indigenous carbon-rich material, ancient water erosion, and a number of tiny structures that resemble the sort of features that we see rock-eating microbes leaving in basaltic glasses here on Earth. This rock, Yamato 000593, appears to have formed 1.3 [...]

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Life, Unbounded

Astrobiology Roundup

mosaic.001

                      Lots of new scientific results in the past couple of weeks feed directly into the central questions of astrobiology – from the search for life, to the environment of interplanetary and interstellar space, and the grand cosmological terrain we find ourselves in. No Methane [...]

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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

There’s Something in the Air: Trans-planetary Microbes

Here come the microbes! (Credit: China Foto Press/Barcroft Medi)

Cover your mouth when you cough! We’ve all learned the hard way that microbial organisms, from bacteria to viruses, can be transported by air. But the extent to which organisms exist in the Earth’s atmosphere is only now becoming clear. There is good evidence that bacteria (or bacterial spores) can help nucleate water condensation, seeding [...]

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Life, Unbounded

The Hot Baths of Mars

Once upon a time on Mars... (Credit: USGS/R. Fournier)

To understand Mars we need to understand its on-again off-again tango with liquid water. It’s not just the search for past or present life on Mars that hinges on this, but the search for a complete chemical, geophysical, and climatological history of the red planet. Water is such a potent agent for topographical and mineralogical [...]

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