How the Universe Works

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Phil Plait

Self - Astronomer

Phil Plait

Self - Astronomer, Discover Magazine

Phil Plait

Self - Phd., Astronomer

Michelle Thaller

Self - Astronomer

Michelle Thaller

Self - Astronomer, NASA Goddard Space Flight Center

Michelle Thaller

Self - Astronomer, NASA Goddard Space Flight Cente

Mike Rowe

Self - Narrator

Mike Rowe

Self - Sel - Narrator

Richard Lintern

Self - Narrator

Hakeem Oluseyi

Self - Astrophysicist

James S. Bullock

Self - Astrophysicist

Lawrence Krauss

Self - Cosmologist

Lawrence Krauss

Self - Theoretical Physicist, Arizona State University

Lawrence Krauss

Self - Theoretical Physicist

Paul M. Sutter

Self - Astrophysicist

Moogega Cooper

Self - Planetary Protection Engineer

Dan Durda

Self - Planetary Scientist

Dan Durda

Self - Astrophysicist

Dan Durda

Self - Planetary Scientist, Southwest Research Institute

Nina Lanza

Self - Planetary Scientist

Jani Radebaugh

Self - Planetary Scientist

Jani Radebaugh

Self - Planetary Geologist

Jani Radebaugh

Self - Planetary Scientist and Geologist

Erik Dellums

Self - Narrator

Kevin Walsh

Self - Astronomer

Michio Kaku

Self - Theoretical Physicist

Michio Kaku

Self - Theoretical Physicist, City University of New York

Michio Kaku

Self - Phd., Theoretical Physicist, City University of New York

Max Tegmark

Self - Physicist

Max Tegmark

Self - Theoretical Physicist

Alex Filippenko

Self - Astrophysicist

Alex Filippenko

Self - Astrophysicist, University of California: Berkeley

Alex Filippenko

Self - Astrophysicis

Grant Tremblay

Self - Astrophysicist

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