NASA's Curiosity Mars rover clicks pic of Mercury passing in front of Sun

June 11, 2014 10:38 AM

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NASA's Curiosity Mars rover clicks pic of Mercury passing in front of Sun

NASA's Curiosity Mars rover has imaged the planet Mercury passing in front of the Sun, visible as a faint darkening that moves across the face of the Sun.

This is the first transit of the Sun by a planet observed from any planet other than Earth, and also the first imaging of Mercury from Mars. Mercury fills only about one-sixth of one pixel as seen from such great distance, so the darkening does not have a distinct shape, but its position follows Mer...

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