Big Picture Science – 100% Invisible: Michael Lemonick / Planet X

by Gary Niederhoff on February 8, 2016


100% Invisible – Planet X
click to listen (trt 8:39)

Part 2 of 100% Invisible, featuring Michael Lemonick, science writer and an editor at Scientific American magazine, on the history of the search for a 9th planet and the evidence for its discovery.

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