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The amazing story of Clyde Tombaugh, a Kansas farm boy and self-educated astronomer who discovered Pluto at the age of 24 (Lowell Observatory, Flagstaff AZ)/In 2006 NASA launched New Horizons spacecraft with some of Tombaugh's ashes on it. It should reach Pluto in July 2015. Discovery Channel has built a new state of the art telescope near Happy Jack, AZ for Lowell. It is available for tours (about 100.00 per person)

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from Telegraph.co.uk

Pluto flyby - as it happened: First pictures show dwarf planet is red like Mars

Pluto and its largest moon Charon compared with the size of Earth Credit: Nasa

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FEB. 18, 1930: American astronomer Clyde Tombaugh discovered Pluto. Image: Clyde Tombaugh: Astronomer Who Discovered Pluto

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“ Pluto is the second closest dwarf planet to the Sun and is also the second most massive dwarf planet. It is possible that either Pluto is the largest dwarf planet but Pluto’s atmosphere makes it is...

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This homemade telescope helped change Clyde Tombaugh's life. His scientific observations eventually lead to his discovery of Pluto!

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Clyde Tombaugh discover Pluto on February 18. 1930. It had been there for years. Recently it became a dwarf planet.

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Pluto (denoted here by the arrows) was revealed to its discoverer, astronomer Clyde Tombaugh, through its movement between January 23, 1930, and January 29, 1930, the dates on which the first and second photographs, respectively, were taken.