Host Michelle Thaller talks with astronomer and author Phil Plait of Slate’s Bad Astronomy blog about this conundrum: why are humans so quick to explain the unknowns of the cosmos as aliens? And why is this healthy imagination important in science?

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This is the first episode of Orbital Path, a new monthly series from PRX. Orbital Path is supported by the Alfred P. Sloan Foundation. Don't miss PRX's other science podcasts: Transistor and Outside Magazine.




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