Ariel Waldman makes “massively multiplayer science”, instigating unusual collaborations that spark clever creations for science and space exploration. Ariel is the founder of Spacehack.org, a directory of ways to participate in space exploration, and the global director of Science Hack Day, a 20-countries-and-growing grassroots endeavor to make things with science. She is the author of What’s It Like in Space?: Stories from Astronauts Who’ve Been There and the co-author of a congressionally-requested National Academy of Sciences study on the future of human spaceflight. She sits on the council for NASA Innovative Advanced Concepts (NIAC), a program that nurtures radical, sci-fi-esque ideas that could transform future space missions. She is also a fellow at Institute for the Future. In 2013, Ariel received an honor from the White House for being a Champion of Change in citizen science.