Chris Hadfield

Astronaut. Former commander of International Space Station (Expedition 35). Engineer, author

Stephen Hawking

Theoretical physicist

Roger Penrose

Mathematical physicist, Nobel Laureate

Carolyn Porco

Planetary scientist

Neil deGrasse Tyson

Astrophysicist and science communicator

Alexei Leonov

Cosmonaut, Voskhod 2, Apollo-Soyuz 19, first space walk

Kip Thorne

Physicist, Nobel Laureate

Brian May

Musician and Astrophysicist, Starmus co-founder

Jill Tarter

Astrophysicist, SETI Pioneer

Elizabeth Blackburn

Biochemist, Nobel Laureate

Barry Barish

Astrophysicist, Nobel Laureate

Claude Nicollier

Astronaut

Edvard Moser

Neuroscientist, Nobel Laureate

Adam Riess

Astrophysicist, Nobel Laureate

Robert Wilson

Physicist , Nobel Laureate

Martin Rees

Astrophysicist

Garik Israelian

Astrophysicist, STARMUS co-founder and Creative Director

Brian Schmidt

Astrophysicist, Nobel Laureate

Russell Schweickart

Astronaut: Apollo 9

Eric Betzig

Physicist, Nobel Laureate

Garrett Reisman

Space X Senior Advisor, ex NASA Astronaut & Engineer

Brian E. Cox

Physicist and science communicator

Jim Al-Khalili

Physicist, author and broadcaster

Brian Eno

Artist, composer

Brian Greene

Physicist

Eugene Kaspersky

Cybersecurity expert

Joel Parker

Astrophysicist

Sergey Volkov

Cosmonaut

David Gross

Physicist, Nobel Laureate

Steven Balbus

Astrophysicist

Joseph Stiglitz

Economist, Nobel Laureate

Peter Schwartz

Aeronautical Engineer and Astrophysicist

Chris Rapley

Climate Scientist

Alfred McEwen

Professor of planetary geology

Paul Franklin

Visual effects expert

Robert J. Sawyer

Science fiction writer

Roman Romanenko

Cosmonaut

Oliver James

Chief Scientist at Double Negative Visual Effects

Danny Hillis

Mathematician and Engineer