"Borneo" Bill Gregory

Retired NASA Astronaut & United States Air Force Lieutenant Colonel

Abigail Harrison

Founder of The Mars Generation, STEM Advocate, Internet Personality & Aspiring Astronaut

Adam G. Riess

Nobel Prize-Winning Astrophysicist

Adam Ostrow

Chief Digital Officer, TEGNA

Adam Segal

Senior Fellow for China Studies and Director of the Digital and Cyberspace Policy Program at the Council on Foreign Relations

Alan Eustace

Stratospheric Explorer

Alan Stern

Engineer, Planetary Scientist & Author

Alberto Ajayi Mata

Digital Marketing Expert, Entrepreneur & Ex-NASA Scientist

Alena Analeigh

Brown STEM Girl Founder; Youngest Person of Color Accepted into Medical School & Youngest NASA Intern

Alex Filippenko

Professor of Astronomy at UC Berkeley Specializing in Supernovae; Gruber Cosmology Prize & Carl Sagan Prize for Science Popularization Recipient

Alex Steffen

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

Alison Gopnik

Professor & World Leader in Children's Learning and Development

Alison Snyder

Managing Editor at Axios

Allan Jones

As CEO of the Allen Institute for Brain Science, Allan Jones leads an ambitious project to build an open, online, interactive atlas of the human brain.

Allison Duettmann

Bio, Neuro & AI Frontier Tech Leader, CEO of Foresight Institute and Author of "Gaming the Future"

GAMING THE FUTURE: Technologies for Intelligent Voluntary Cooperation

Alyssa Carson

Youngest Ever Astronaut in Training; Space Travel Enthusiast

Amber Jenkins

Applied Science Engineer, NASA’s Jet Propulsion Laboratory; Editor, NASA Climate Change Website

Amy Lo

Observatory Alignment Thread Lead on the James Webb Space Telescope Program

Amy Lockwood

Deputy Director of Stanford's Center for Innovation in Global Health

Andrew Connolly

Astronomer