By Neil deGrasse Tyson
Published November 22, 2019 2:30pm
What lies hidden in the murky hallways of the cosmos? Neil deGrasse Tyson, astrophysicist Jackie Faherty, PhD, and co-host Chuck Nice answer your fan-submitted questions on brown dwarfs, interstellar objects, Planet 9, and more!
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Image Credit: NASA, ESA, Hubble; Processing & Li...