Name	Known for
Erik Thompson Narrator Narrator See fewer	A Murder of Crows (1998)
Alex Filippenko Self - Astrophysicist, UC Berkeley Self - Astrophysicist, UC Berkeley See fewer	The Universe (2002)
John Mosley Self - Author, 'he Christmas Star' Self - Author, 'he Christmas Star' See fewer	The Universe (2007)
Tyler Nordgren Self - Astronomer, University of Redlands Self - Astronomer, University of Redlands See fewer	P.O.V. (1988)
Michael Mischna Self - Planetary Scientist Self - Planetary Scientist See fewer	The Universe (2007)
R. Michael Rich Self - Research Astronomer, UCLA Self - Research Astronomer, UCLA See fewer	Horizon (I) (1964)
Laura Danly Self - Astronomer, Griiffith Observatory Self - Astronomer, Griiffith Observatory See fewer	How the Universe Works (2010)
Clifford V. Johnson Self - Physicist, USC (as Clifford Johnson) Self - Physicist, USC (as Clifford Johnson) See fewer	Palm Springs (2020)
Scott Evans Self - Engineer, NASA / JPL Self - Engineer, NASA / JPL See fewer	Four Blood Moons (2015)
Pope Benedict XVI Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Last Testament: In His Own Words (2021)