Part I: Aliens in history
Part II: It's Life, Jim, but Not as We Know It
What do Xenomorphs from Alien and Na'vi from Avatar have in common?
Lost in space: Are silicon spiders a thing?
Why do the heptapods from Arrival look like octopuses?
Dune and Pandora: When does the ecology of an alien world become a character?
Is Jar Jar Binks to blame for so few aqautic aliens?
Would Luke Skywalker really have been human?
What do aliens in DC's Superman and Marvel's Avengers have in common?
Why might our galazy be full of ewoks?
Aliens on our moon: what was America's great moon hoax?
Spaceballs: how do aliens avoid life's big obstacles?
How does does alien migration happen in Star Wars and Star Trek?
How would the engineers in Prometheus know which star systems to colonize?
Forbidden planet: how weird are alien worlds?
Cloud city: is there life on gas giants?
The wandering Earth: are there rogue aliens worlds?
Are the ancient aliens in Assassin's Creed possible?
Foundation and Mandalorian: how might alien empires grow?
Groot, Spock, or Bug: what might aliens look like?
Time Lords, Vulcans, and Kryptonians: are clever aliens violent?
Close enoucnters: was 'Oumuamua an alien contact event?
Cloverfield and Contact: what is the most likely form of alien contact?
John was trying to contact aliens: are we alone?