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Martian Crater May Once Have Held Groundwater-Fed Lake

By Guest PostJanuary 22, 2013Sciencearabia terra, carbonate, clay mineral, compact reconnaissance, crism, early evolution, flat rock, groundwater, hydrothermal fluids, imaging spectrometer, joseph michalski, lake environment, layered, mars, mars orbiters, mars reconnaissance orbiter, martian crater, martian history, mclaughlin crater, meteor impact, mro, nasa spacecraft, non acidic conditions, potential habitat, red planet, rich zurek, scott murchie, spectrometer data, subsurface, subsurface habitability, underground water, wet underground environment

PASADENA, Calif. — A NASA spacecraft is providing new evidence of a wet underground environment on Mars that adds to an increasingly complex picture of the Red Planet’s early evolution.

The new information comes from researchers analyzing spectrometer data from NASA’s Mars Reconnaissance Orbiter, which looked down on the floor of McLaughlin Crater. The Martian crater is 57 miles (92 kilometers) in diameter and 1.4 miles (2.2 kilometers) deep. McLaughlin’s depth apparently once allowed underground water, which otherwise would have stayed hidden, to flow into the crater’s interior. (more…)

MU, ASU Researchers’ Discovery Could Change Views of Human Evolution

3.2 million-year-old human predecessor had arches in feet

COLUMBIA, Mo. – Feet arches give humans a spring in their steps, shock absorbing abilities, and stiff platforms to propel themselves forward, allowing them to walk upright consistently. Now, researchers at the University of Missouri and Arizona State University have found proof that arches existed in a predecessor to the human species that lived more than 3 million years ago. This discovery could change scientists’ views of human evolution. The study is being published this week in Science. (more…)

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Martian Crater May Once Have Held Groundwater-Fed Lake

MU, ASU Researchers’ Discovery Could Change Views of Human Evolution