The BEST episodes of Alien Worlds
Every episode of Alien Worlds ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Alien Worlds!
Applying the laws of life on Earth to the rest of the galaxy, this series blends science fact and fiction to imagine alien life on other planets.
7.47
143 votes
#1 - Eden
Season 1 - Episode 3 - Aired 12/2/2020
Twin stars create an oxygen-rich atmosphere on Eden, where a teeming biosphere may parallel seasonal cycles of predation and reproduction o Earth.
7.41
140 votes
#2 - Terra
Season 1 - Episode 4 - Aired 12/2/2020
A hyperadvanced species makes their home on doomed exoplanet Terra, which orbits an aging star. Now they must colonize another world, using robots.
7.41
210 votes
#3 - Atlas
Season 1 - Episode 1 - Aired 12/2/2020
On Exoplanet Atlas, dense gravity creates a thick atmosphere allowing airborne life forms to thrive - but also providing a lesson in adaptability.
7.40
159 votes
#4 - Janus
Season 1 - Episode 2 - Aired 12/2/2020
Ants, scorpions and fireflies provide clues for biologists to conjecture about life on exoplanet Janus, including highly adaptable pentapods.