Previews + Extras
The Mystery of Tabby’s Star
S45 E103 - 3m 18s
Tabby’s star flickers erratically and no one knows why—could it be an alien megastructure?
Can We Use Pollution to Find Aliens?
S45 E103 - 2m 16s
The hunt for pollution in other planets’ atmospheres may determine whether or not we are alone in the universe.
Profile: Jason Kalirai
S45 E103 - 6m 39s
Astrophysicist Jason Kalirai observes stars and searches for habitable planets in the hopes of finding life.
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