Explained Extraterrestrial Life (Season 1, Episode 9)
TV-MA
TV Episode | Documentary

Explained

Extraterrestrial Life (Season 1, Episode 9)

TV-MA

TV Episode | Documentary

Despite decades of searching, we have yet to discover extraterrestrial life. Scientists discuss the reasons, including: Are aliens just too snobby?

Contacts

+ Add

Become a member to see contact information for Extraterrestrial Life.

Cast	+ Add Cast
16 cast members

Name	Known for
LeVar Burton Self - Narrator Self - Narrator See fewer	Star Trek: Generations (1994)
Mary Anne Francis Self - Contactee (archive footage) Self - Contactee (archive footage) See fewer
Seth Shostak Self - Astronomer Self - Astronomer See fewer	The Day the Earth Stood Still (2008)
Sara Seager Self - Planetary Scientist Self - Planetary Scientist See fewer	Solis (2018)
Kennda Lynch Self - Astrobiologist Self - Astrobiologist See fewer	Nova (1974)
Paul Davies Self - Physicist Self - Physicist See fewer	Alien Encounters (2012)
Donald E. Keyhoe Self - Former U.S. Marine Corps Aviator (archive footage) Self - Former U.S. Marine Corps Aviator (archive footage) See fewer	Earth vs. the Flying Saucers (1956)
Lawrence Tacker Self - Lt. Colonel, U.S. Air Force (archive footage) Self - Lt. Colonel, U.S. Air Force (archive footage) See fewer	CBS Reports (1959)
Jill Tarter Self - Astronomer Self - Astronomer See fewer	Future Flight (1987)
Enrico Fermi Self (archive footage) Self (archive footage) See fewer
Stephen Hawking Self (voice) (archive footage) Self (voice) (archive footage) See fewer	Star Trek: The Next Generation (1987)
Ronald Reagan Self (archive footage) Self (archive footage) See fewer	Kings Row (1942)
Carl Sagan Self (archive footage) Self (archive footage) See fewer	Contact (1997)
Chuck Scarborough Self (archive footage) Self (archive footage) See fewer	The Adjustment Bureau (2011)
Walter Cronkite Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Liberty's Kids (2002)
J. Allen Hynek Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Close Encounters of the Third Kind (1977)