The long shallow grooves lining the surface of Phobos are likely early signs of the structural failure that will ultimately destroy this moon of Mars. Orbiting a mere 3,700 miles (6,000 kilometers) ...
Mars' innermost moon, Phobos, has long puzzled planetary scientists, who have continually debated whether it's a captured asteroid or formed from debris after a giant impactor struck the Martian ...
A new study suggests that the grooves on Mars’ moon Phobos are signs of stress, caused by the pull of gravity between Mars and its moon. Image via NASA/JPL-Caltech ...
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