How to celebrate Earth Day 2015 with NASA

April 22, 2015 1:55 PM

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How to celebrate Earth Day 2015 with NASA

Today (April 22) is the 45th anniversary of Earth Day, and NASA has a series of activities planned to celebrate the beauty of our home planet.

NASA astronauts are given some credit for the origins of Earth Day, as the pictures they take of our planet from space – particularly a famous Earthrise-over-the-moon photo by the Apollo 8 crew in 1968 – showed Earth as a delicate blue marble in space.

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