How the Universe Works Cast

as Astrophysicist

as Astrophysicist

as Astrophysicist

as Narrator

as Narrator

as Narrator

as Astronomer

as Astronomer

as Astronomer, NASA Goddard Space Flight Center

as Planetary Scientist

as Planetary Protection Engineer

as Astrophysicist / Planetary Scientist, Southwest Research Institute

as Cosmologist / Theoretical Physicist, Arizona State University

as Planetary Scientist and Geologist

as Theoretical Physicist, City University of New York