Mercury is the densest and smallest planet around the sun! Since it hasn't been explored as much as the other planets, more than half of it's unknown. NASA's Messenger probe will be the first spacecraft to image the whole planet. It was sent out into orbit on January 14, 2008. "With Messenger, many of Mercury's secrets will now be revealed," said NASA's planetary science division director James Green. The only spacecraft to go to the inner parts of the solar system was NASA's Mariner 10, which mapped less than 45 percent of this hot planet. There are a lot of mysteries about the planet mercury we hope to learn a lot more with this new probe.
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The picture posted is an artists interpretation on what it should look like while capturing mercury!
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