EarthSky | February 18, 1930: Clyde Tombaugh discovers Pluto
EarthSky | February 18, 1930: Clyde Tombaugh discovers Pluto
Feb 17, 2022
earthsky.org
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 Tomba…
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FacebookNational Air and Space Museum, Smithsonian I…
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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🪐 When Pluto was discovered in 1930, no one alive today will see it finish its first full orbit around the Sun because that won’t happen until March 23, 2178. ❄️ Pluto takes 248 Earth years to complete just one trip around our star. Since Clyde Tombaugh first spotted it, this tiny world has been slowly gliding through the outer reaches of the solar system a frozen traveler tracing a path so vast that generations of humanity will pass before it returns to the same point. Once a planet, now a “dw
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