Name	Known for
Erik Thompson Self - Narrator (voice) Self - Narrator (voice) See fewer	A Murder of Crows (1998)
Amy Mainzer Self - Astronomer, NASA Jet Propulsion Laboratory (JPL) Self - Astronomer, NASA Jet Propulsion Laboratory (JPL) See fewer	Don't Look Up (2021)
Michio Kaku Self - Theoretical Physicist / Author, 'Physics of the Impossible' Self - Theoretical Physicist / Author, 'Physics of the Impossible' See fewer	Accidental Truth: UFO Revelations (2023)
Alex Filippenko Self - Astrophysicist, Univ. of California, Berkeley Self - Astrophysicist, Univ. of California, Berkeley See fewer	The Universe (2002)
Michelle Thaller Self - Astronomer, Caltech Self - Astronomer, Caltech See fewer	Spaceship Spitzer: The Slowlian Web (2008)
Clifford V. Johnson Self - Physicist, Univ. of Southern California (as Clifford Johnson) Self - Physicist, Univ. of Southern California (as Clifford Johnson) See fewer	Palm Springs (2020)
Laura Danly Self - Astronomer, Curator of Griffith Park Observatory Self - Astronomer, Curator of Griffith Park Observatory See fewer	The Universe (2007)
Alan Guth Self - Theoretical Physicist, M.I.T. Self - Theoretical Physicist, M.I.T. See fewer	Nova (1974)
Lene Vestergaard Hau Self - Harward University (as Lene Hau) Self - Harward University (as Lene Hau) See fewer	Nova (1974)
Marc Millis Self - Propulsion Physicist, Tau Zero Foundation Self - Propulsion Physicist, Tau Zero Foundation See fewer	The Universe (2007)
William Althoff Self - Actor Self - Actor See fewer	The Universe (2007)
Albert Einstein Self - Physicist (archive footage) (uncredited) Self - Physicist (archive footage) (uncredited) See fewer	Schooling the World (2010)
Stephen Hawking Self - Theoretical Physicist (archive footage) (uncredited) Self - Theoretical Physicist (archive footage) (uncredited) See fewer	Star Trek: The Next Generation (1987)
Edwin Hubble Self - Astronomer (archive footage) (uncredited) Self - Astronomer (archive footage) (uncredited) See fewer