EarthSky | February 18, 1930: Clyde Tombaugh discovers Pluto
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EarthSky | February 18, 1930: Clyde Tombaugh discovers Pluto
On this date in 1930, Clyde Tombaugh, searching for a 9th planet, discovered Pluto. This opened the door to further exploration of the outer solar system.
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61K views · 534 reactions | In 1930, amateur astronomer Clyde Tombaugh discovered Pluto using a telescope, photographic plates of the solar system, and a tool called a blink comparator. You can see a blink comparator and Pluto discovery plate on display in the "Kenneth C. Griffin Exploring the Planets Gallery" at the Museum in DC. This video series is made possible by the generous support of Lockheed Martin. | National Air and Space Museum, Smithsonian Institution | Facebook
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61K views · 534 reactions | In 1930, amateur astronomer Clyde Tombaugh discovered Pluto using a telescope, photographic plates of the solar system, and a tool called a blink comparator. You can see a blink comparator and Pluto discovery plate on display in the "Kenneth C. Griffin Exploring the Planets Gallery" at the Museum in DC. This video series is made possible by the generous support of Lockheed Martin. | National Air and Space Museum, Smithsonian Institution | Facebook
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61K views · 534 reactions | In 1930, amateur astronomer Clyde Tombaugh discovered Pluto using a telescope, photographic plates of the solar system, and a tool called a blink comparator. You can see a blink comparator and Pluto discovery plate on display in the "Kenneth C. Griffin Exploring the Planets Gallery" at the Museum in DC. This video series is made possible by the generous support of Lockheed Martin. | National Air and Space Museum, Smithsonian Institution | Facebook
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On February 18, 1930, the American astronomer Clyde Tombaugh discovered Pluto! Before he discovered Pluto, another astronomer named Percival Lowell had spent over a decade trying to find it. He had theorized that a ninth planet existed based on wobbles seen in the orbits of Uranus and Neptune. But it wasn't until Tombaugh started using a new observation technique that Pluto was first spotted. The new technique involved something called a blink microscope, which Tombaugh used to compare photograp
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