Sunita Williams

NASA Astronaut; Formerly Held the Records for Total Spacewalks & Most Spacewalk Time by a Woman

Michael Lopez-Alegria

Former Astronaut & Navy Test Pilot

Fred Gregory

Astronaut, Military Fighter & Test Pilot

Ashley Dove-Jay

Crew Commander of Mars analog astronauts expedition, aerospace engineer (PhD), 3x TEDx speaker, prolific pop-sci writer, space columnist

Daniel Tani

NASA Astronaut & Engineer

Clayton Anderson

Former NASA Astronaut; Author of "The Ordinary Spaceman: From Boyhood Dreams to Astronaut"

Mary Ellen Weber

Former NASA Astronaut & Legislative Affairs Liaison at NASA; Founder of Stellar Strategies

Mark Polansky

Former NASA Astronaut, Military Fighter & Test Pilot

Garrett Reisman

Astronaut, Professor of Astronautical Engineering at USC & Senior Advisor at SpaceX

John “Danny” Olivas

Former NASA Astronaut & Mission Assurance Expert; Co-Director of the Visual Intelligence & Multimedia Analytics Laboratory at the University of Southern California

Robert Curbeam

Former NASA Astronaut & Retired Captain in the U.S. Navy; Record Holder for Most Spacewalks During a Single Spaceflight

Ariel Waldman

Antarctic Explorer & Filmmaker; Author of "Out There: The Science Behind Sci-Fi Film and TV" & "What's It Like in Space?: Stories From Astronauts Who've Been There"

Peggy Whitson

Director at Axiom Space; NASA's Most Experienced Female Astronaut; Biochemistry Researcher

Peggy Whitson, American with most time in space, set to return to ...

Gregory H. “Box” Johnson

Former NASA Astronaut, Retired Air Force Colonel & Past President of the Center for the Advancement of Science in Space

Ron Garan

Retired NASA Astronaut, Fighter Pilot & Author of "The Orbital Perspective - Lessons in Seeing the Big Picture from a Journey of 71 Million Miles"

Pamela Melroy

Retired Air Force Officer & Former NASA Astronaut

From Star Trek Posters to NASA: The Journey of Pamela Melroy '83

Jamil Qureshi

Performance Psychologist to Some of the World's Greatest Sportsmen

Stephen Attenborough

Director of Virgin Galactic

Mark N. Brown

NASA Astronaut, USAF Fighter Pilot, Engineer, NASA & Corporate Manager

Jay Ratliff

Clear Channel Radio and FOX News Contributor