Alien Worlds (Season 1)

Alien Worlds (2020) is a Netflix science documentary series you can watch online on iFILM, narrated by Sophie Okonedo. The premise is rigorous rather than fantastical: take the biological rules that govern life on Earth — natural selection, parasitism, colonial behaviour, predator-prey dynamics — and calculate what they would produce on planets with different gravity, two suns, or a methane-thick sky.

Each episode pairs real wildlife footage with expert commentary from researchers including astrobiologist Natalie Batalha, then uses CGI to visualise the hypothetical creatures the science suggests. The show is careful to separate what is known from what is extrapolated, which puts it closer to hard science than to sci-fi spectacle. Stream Alien Worlds (2020) online on iFILM.