Sam Avery was standing on the ceiling. But to him, it seemed like everyone else was upside down. “You think the ceiling is the floor,” he said. “Your mind completely agrees it’s the floor. It’s one of the craziest things I’ve ever experienced.” Avery was on his second flight on a special NASA plane with UC San Diego’s zero-gravity team. They were investigating how biofuels burn in space, at the suggestion of mechanical engineering professor Forman Williams. It was Avery’s second stint on the team, this time as captain. Avery is headed for graduate school at Stanford. He’d like to start his own company some day.
