[DOWNLOAD] The Secrets of Mercury (Planets)

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The Secrets of Mercury (Planets)
Sinopsis :
Mercury is the smallest planet in our solar system, but it still
has secrets! From ancient cultures that watched the skies, to
modern scientists who send machines into space, humans are
passionately curious about the planet closest to the Sun. Learn
about Mercury's discovery, what it would be like to visit, and
what scientists still want to know. Vivid photos and illustrations,
scientist spotlights, and sidebars help unlock the secrets of
Mercury.