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Which planet is closest to the sun?
Mercury takes only 88 Earth days to orbit the sun.
Mashable29d
Stunning new images of Mercury show the scorched planet's north pole
New images of the planet Mercury taken by a robotic spacecraft have just been released — and they show the scorched world in fascinating up-close detail. SEE ALSO: Is Mercury in retrograde?
autoevolution27d
Planet Mercury Poses for Cameras as Star Trek-Like Spaceship Comes Close to It
As it circled it, it snapped these incredible images of one of the Solar System's most mysterious planets. BepiColombo is Europe's first mission to Mercury. It relies on two different orbiters ...