Characters played by Sean Carroll
Self - Theoretical Physicist
Caltech
Characters played by Robbert Dijkgraaf
Self - Theoretical Physicist
Institute for Advanced Study
Characters played by Arthur Stanley Eddington
Self - Astronomer
Characters played by Albert Einstein
Self - Theoretical Physicist
Characters played by Sylvester James Gates Jr.
Self - Theoretical Physicist
Brown University
Characters played by Brian Greene
Self - Theoretical Physicist
Columbia University
Characters played by Stephen Hawking
Self - Theoretical Physicist
Characters played by Edwin Hubble
Self - Astronomer
Characters played by David Kaiser
Self - Physicist
MIT
Characters played by Mark Kelly
Self - Astronaut
Characters played by Scott Kelly
Self - Astronaut
Characters played by Georges Lemaître
Self - Astronomer
Characters played by Janna Levin
Self - Theoretical Cosmologist
Barnard College
Characters played by Zac Manchester
Self - Aerospace Engineer
Stanford University
Characters played by Hakeem Oluseyi
Self - Astrophysicist
Florida Institute of Technology
Characters played by Malcolm Perry
Self - Theoretical Physicist
University of Cambridge
Characters played by David Reitze
Self - LIGO Executive Director
Characters played by Andrew Strominger
Self - Theoretical Physicist
Harvard University
Characters played by Leó Szilárd
Self - Physicist
Characters played by Erik Thompson
Narrator
Characters played by Kip Thorne
Self - Theoretical Physicist
Caltech
Characters played by Rai Weiss
Self - Physicist
MIT