The planet Mercury is named after the messenger of the Roman gods because of its fleeting nature across the sky. Find out the reason behind its incredible speed, if it is indeed the hottest planet in the Solar System, and why the smallest planet in the solar system is slowly shrinking.
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Read "Planet Mercury, explained"
https://on.natgeo.com/2Ozq83J

Mercury 101 | National Geographic
   • Mercury 101 | National Geographic  

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