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Killers of the Cosmos

Season 1 Episode 4: Little Green Men

Uncovering the mysteries of alien existence, scientists discover the alarming risks that extraterrestrial life poses to human civilization.

Season 1 Episodes:

Episode 1 Killer Rocks

1. Killer Rocks

Aired: Sep 11, 2021

A massive asteroid hurtles towards Earth, threatening the survival of human c...

Episode 2 Death Ray

Aired: Sep 18, 2021

The impending demise of a star may trigger a catastrophic release of energy, ...

Episode 3 Cosmic Scrap

3. Cosmic Scrap

Aired: Sep 25, 2021

A massive 100 million small space debris fragments orbit the Earth, posing a ...

Episode 4 Little Green Men

4. Little Green Men

Aired: Oct 2, 2021

Uncovering the mysteries of alien existence, scientists discover the alarming...

Episode 5 Dark Star

Aired: Oct 9, 2021

Next episode, scientists uncover evidence of a mysterious black hole phenomen...

Episode 6 Big Sleep

Aired: Oct 16, 2021

Experts investigate the universe's impending doom, dissecting the timing and ...

Main Cast

Info about Killers of the Cosmos

Network: Discovery

Production Countries: United Kingdom, United States

Genres:Drama, Documentary