Tag Archives: meteorites

How often does Mars get whacked?

Posted on June 30, 2011 by rburnham

Or — to pose this question more usefully — what’s the rate of crater-making impacts on Mars as compared to, say, the Moon? Why the Moon? Because it’s the one extraterrestrial body for which scientists have both a long visible … Continue reading →

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Big bangs

Posted on May 16, 2011 by rburnham

Really large meteorites produce impact scars big enough to be called basins. Although not defined by a particular size, basins differ from smaller craters in that the floor of a basin follows the planet’s curvature. New calculations published in the … Continue reading →

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