Abigail Harrison

Founder of The Mars Generation, STEAM Advocate & Internet Personality

Abigail Harrison 1 - YouTube

Leland Melvin

Engineer, Former NASA Astronaut and former NFL Wide Receiver

How I overcame disability to become a NASA astronaut | Leland Melvin

Robert Zubrin

Best-Selling Author & Aerospace Engineer

Dr. Robert Zubrin - Space Expo 2018 - Seattle's Museum of Flight ...

Alex Steffen

Author of "Carbon Zero: Imagining Cities That Can Save the Planet"

Alyssa Carson

Youngest Ever Astronaut in Training

Tara M. Ruttley

Associate Program Scientist for the International Space Station at NASA's Johnson Space Center

Emily Calandrelli

Aerospace Engineer; Host & Producer of FOX's "Xploration Outer Space"

Adventures of a Science Storyteller on TV with Space Gal Emily ...

Aprille Ericsson

Rocket Scientist, Technologist and STEM Educator

Dottie Metcalf-Lindenburger

Astronaut, Educator, Earth Scientist

Dava J. Newman

Former Deputy Administrator of NASA; Professor of Aeronautics, Astronautics and Engineering Systems at MIT

Alex Filippenko

Nobel Prize Winner in Physics, Professor of Astronomy at UC Berkeley

Amber Jenkins

Editor of NASA's Global Climate Change Website and Project Manager & Research Consultant for JPL's Center for Climate Sciences

Sunita Williams

Indian-American Astronaut, holds the record for the longest space flight and most space walk time for a woman

Gregg Maryniak

Co-Founder and Secretary of the X PRIZE Foundation

Sean Carroll

Physicist & Cosmologist at Caltech

Peter Diamandis

Chairman and CEO, X PRIZE Foundation; Author, Named one of Fortune Magazine's "World's 50 Greatest Leaders"

Bold: How to Go Big, Create Wealth and Impact the World

Garrett “Big G” Reisman

Retired Astronaut & Director of Space Ops at SpaceX

Peggy Whitson

NASA Astronaut, NASA's Most Experienced Female Astronaut, Biochemistry Researcher

Thomas D. Jones, PhD

Former NASA astronaut, scientist, speaker, author, and consultant

Chris Hadfield

Astronaut & Former Commander of the International Space Station