This episode takes a close look at Mercury's moment in the sun. Mercury is one of the nearest planets to Earth, but for centuries it eluded astronomer's best efforts to learn its secrets. But that has changed thanks to missions like ...See moreThis episode takes a close look at Mercury's moment in the sun. Mercury is one of the nearest planets to Earth, but for centuries it eluded astronomer's best efforts to learn its secrets. But that has changed thanks to missions like Mariner and most recently, Messenger.
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