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How Pluto Was Discovered: The Surprising Story of Planet X!
How Pluto Was Discovered: The Surprising Story of Planet X! Pluto’s discovery in 1930 was a turning point in astronomy, but the story is full of surprises! This video tells how Clyde Tombaugh found Pluto while hunting for a mysterious “Planet X.” Learn why Pluto was much smaller than astronomers hoped and how its discovery led to new ...
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