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Waspie_Dwarf

Dramatic New Crater On Mars

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NASA Mars Orbiter Examines Dramatic New Crater

Space rocks hitting Mars excavate fresh craters at a pace of more than 200 per year, but few new Mars scars pack as much visual punch as one seen in a NASA image released today.

The image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter shows a crater about 100 feet (30 meters) in diameter at the center of a radial burst painting the surface with a pattern of bright and dark tones.

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quote:

"The impact that excavated this crater threw some material as far as 9.3 miles (15 kilometers)"

Wow!

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Wow indeed.

Even keeping in mind Mars's lower gravity than Earth, that's a long way for ejecta to travel.

I'm thinking, though, that a 30 metre diameter crater means a meteor that was perhaps only a few metres across - that's quite a bit smaller than the Chelyabinsk meteor. That in turn goes to show what a big job the Earth's atmosphere does in protecting us from space rocks.

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Is this a False Colour Image to highlight the ejecta, or is it True Colour? If the latter, then has anyone surmised the mineralogy of the ejecta and substrate)

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