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Posts Tagged "martian meteorites"

Basic Space

They came from Mars

Computer generated image of Mars at daybreak. Credit: {link url="http://www.nasa.gov/mission_pages/msl/multimedia/gallery/pia14293.html"}NASA/JPL-Caltech{/link}

A glowing fireball descended through the sky over North Africa last July, accompanied by two sonic booms. Observers saw the fireball turn from yellow to green, then split into two parts before one fell to the ground in a valley and the other crashed into a mountain. And then… nothing, for a while. The rocks [...]

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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

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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