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Season 2021

General
Artwork
  • TheTVDB.com Season ID 1955898
  • Created September 9, 2021
  • Modified July 29, 2025
When available, episode names will be translated into your preferred language. Otherwise they will be shown using the series' origin language.
Name First Aired Runtime Image
S2021E01 The Mysterious BLC1 Radio Signal Update for 1/12/21
January 12, 2021
 25
S2021E02 10 Astroengineering Projects We May Some Day Try
January 28, 2021
 25
S2021E03 10 Anti Great Filters That May Make Alien Life Common
February 16, 2021
 16
S2021E04 The Strange Mystery of the Golden Stars
February 26, 2021
 10
S2021E05 The Impossible Planet
March 7, 2021
 15
S2021E06 10 Strange Mysteries of Particle Physics
March 19, 2021
 16
S2021E07 Are We Martians?
March 28, 2021
 9
S2021E08 Two New SETI Biosignature Types
April 14, 2021
 7
S2021E09 10 Bizarre but Possible Exotic Stars
April 18, 2021
 13
S2021E10 Theia and The Mysterious Flash of Light at NGC 2547
April 25, 2021
 10
S2021E11 10 Spooky Objects that could Lurk in the Solar System
April 30, 2021
 22
S2021E12 The Fifth Force of Nature
May 9, 2021
 5
S2021E13 10 Strange Incidents Regarding Spacecraft
May 23, 2021
 17
S2021E14 The Atmospheres of Terrestrial Worlds
June 17, 2021
 12
S2021E15 Fermi paradox: Early in the Game
July 4, 2021
 9
S2021E16 Alien Technosignature? The Mysterious Star VVV-WIT-08
July 7, 2021
 13
S2021E17 Will the Galileo Project Solve the Fermi paradox?
July 26, 2021
 22
S2021E18 10 Recent Developments in Astrobiology
July 30, 2021
 21
S2021E19 The Immortal Alien Civilization Paradox
August 4, 2021
 15
S2021E20 The Red Dwarf Question
August 17, 2021
 12
S2021E21 The Protocols of Alien First Contact
September 8, 2021
 21
S2021E22 Fermi Paradox: The Interdict Scenario
September 13, 2021
 12
S2021E23 KIC 8462852: The Plot Thickens
September 18, 2021
 18
S2021E24 The Faint Young Sun Paradox
September 24, 2021
 11
S2021E25 The Slow Motion Supernova
September 26, 2021
 11
S2021E26 10 Unsettling Possibilities Regarding Alien Life
October 3, 2021
 22
S2021E27 Can the Universe Self-Destruct?
October 7, 2021
 11
S2021E28 What Mysteries Lie in the Solar System's Oceans?
October 10, 2021
 12
S2021E29 The Rise of the Alien Machines
October 15, 2021
 13
S2021E30 Intentional Extinction
October 18, 2021
 11
S2021E31 10 Astronomical Objects That Are Not Behaving As They Should
October 25, 2021
 17
S2021E32 The Day the Oxygen Went Away
October 28, 2021
 13
S2021E33 Fermi Paradox: The Alien Police Action Scenario
October 31, 2021
 12
S2021E34 Have We Found Planet 9?
November 10, 2021
 9
S2021E35 10 Mysteries The James Webb Telescope Might Solve
November 14, 2021
 15
S2021E36 The Apocalypse of Saturn
November 12, 2021
 12
S2021E37 10 Unpleasant Alien Civilization Scenarios
November 26, 2021
 24
S2021E38 Blanets and Forsaken Worlds
December 6, 2021
 20
S2021E39 10 Positive Alien Civilization Scenarios
December 14, 2021
 22
S2021E40 KIC 8462852: The Strangeness Continues
December 18, 2021
 12
S2021E41 SETI and Alien Quantum Communications
December 27, 2021
 15
S2021E42 The Search for Life at Venus
season finale
December 31, 2021
 15

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