Clyde Tombaugh discovered Pluto in 1930. In this video, Neil deGrasse Tyson meets his family. Watch The Pluto Files in its entirety at www.pbs.org/nova/pluto
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20Jan
Tags: Clyde Tombaugh, Neil degrasse Tyson, Nova (TV Series), NOVA sciencenow, PBS, Pluto, Pluto Files