How the Universe Works The Search for a Second Earth (Season 3, Episode 9)
TV-PG
TV Episode | 42 min | Documentary

Primary photo for The Search for a Second Earth

How the Universe Works

The Search for a Second Earth (Season 3, Episode 9)

TV-PG

TV Episode | 42 min | Documentary

Is there another Earth out there with liquid oceans, rocky continents and life like us? Astronomers seek the answer with spectroscopy, direct imaging and telescopes. They hope to find evidence of atmospheres, magnetospheres and signs of life.

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Cast	+ Add Cast
16 cast members

Name	Known for
Richard Lintern Self - Narrator (voice) Self - Narrator (voice) See fewer	The Bank Job (2008)
Mike Rowe Self - Narrator (voice) Self - Narrator (voice) See fewer	Dirty Jobs (2005)
James S. Bullock Self - Astrophysicist Self - Astrophysicist See fewer	How the Universe Works (2010)
Dan Durda Self - Planetary Scientist Self - Planetary Scientist See fewer	Alternate Universe: A Rescue Mission (2016)
John Asher Johnson Self - Astronomer (as John Johnson) Self - Astronomer (as John Johnson) See fewer	How the Universe Works (2010)
Michio Kaku Self - Phd., Theoretical Physicist, City University of New York (as Dr. Michio Kaku) Self - Phd., Theoretical Physicist, City University of New York (as Dr. Michio Kaku) See fewer	Accidental Truth: UFO Revelations (2023)
Jeremy Kasdin Self - Aerospace Engineer Self - Aerospace Engineer See fewer	How the Universe Works (2010)
David Kipping Self - Astronomer, Harvard-Smithsonian Center for Astrophysics Self - Astronomer, Harvard-Smithsonian Center for Astrophysics See fewer	Watching the End of the World (2020)
Heather A. Knutson Self - Assistant Professor of Planetary Science Self - Assistant Professor of Planetary Science See fewer	How the Universe Works (2010)
Geoff Marcy Self - Phd., Astronomer, University of California, Berkeley Self - Phd., Astronomer, University of California, Berkeley See fewer	Extreme Universe (2010)
Chris McKay Self - Astrobiologist Self - Astrobiologist See fewer	Doppelgängers³ (2024)
Ben Oppenheimer Self - Astrophysicist Self - Astrophysicist See fewer	How the Universe Works (2010)
Phil Plait Self - Phd., Astronomer Self - Phd., Astronomer See fewer	Arrival (II) (2016)
Evgenya Shkolnik Self - Astronomer Self - Astronomer See fewer	How the Universe Works (2010)
Kevian Stassun Self - Phd., Physics and Astronomy Self - Phd., Physics and Astronomy See fewer	How the Universe Works (2010)
Michelle Thaller Self - Phd., Astronomer, NASA Goddard Space Flight Center Self - Phd., Astronomer, NASA Goddard Space Flight Center See fewer	Spaceship Spitzer: The Slowlian Web (2008)