New discoveries reveal the dangers that asteroids pose to planet Earth, but these rocky worlds could be the next destination for human space colonization. This episode is a mashup of TBD and "How the Universe Works", S06E09, "War on Asteroids".
Episode Discussion
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If anyone can figure out the TBD for the first hour of this Special episode, please add it with the Science Channel series, Season/Episode numbers, and episode title. No episode of Space's Deepest Secrets covers asteroids in Seasons 1-3 and most of Season 4 before this episode's air date of July 30, 2018. The TBD may be Strip the Cosmos, S01E03, "Killer Asteroids." I could not be sure. Even thetvdb.com lists TBD. Thanks.