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New discoveries reveal the hidden secrets of the strangest and deadliest stars in the cosmos. This episode of is a mashup of "How the Universe Works" S06E02 "Twin Suns: The Alien Mysteries" and S05E04 "Stars That Kill."
Planets that orbit two suns instead of one might be deadly hell worlds, but new discoveries reveal that sci-fi star systems with binary stars might be optimal places for alien life.
Our solar system hides a dark and violent past, and new discoveries reveal that Earth and the planets were formed from the destruction of strange alien worlds that came before us.