Researchers find ancient climate cycles recorded in Mars rocks

Researchers at the California Institute of Technology (Caltech) and their colleagues have found evidence of ancient climate change on Mars caused by regular variation in the planet's tilt, or obliquity. On Earth, similar "astronomical forcing" of climate drives ice-age cycles.

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<p><a href="http://www.physorg.com/news147623815.html">Researchers find ancient climate cycles recorded in Mars rocks</a></p> <p>Researchers at the California Institute of Technology (Caltech) and their colleagues have found evidence of ancient climate change on Mars caused by regular variation in the planet's tilt, or obliquity. On Earth, similar "astronomical forcing" of climate drives ice-age cycles.</p>