NASA, Lego celebrate Earth Day's 50th anniversary with 'Build A Planet' challenge

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Fifty years after an astronaut's photo of our home planet gave rise to the first celebration of Earth Day, NASA has turned to another medium for a planetary formation challenge. NASA and Lego announced a new "Build a Planet" one-day activity.

NASA, Lego celebrate Earth Day's 50th anniversary with 'Build A Planet' challenge : Read more