Photo: Professor moves rockets closer to warp speed

Jim Peoples, vice president of marketing at Grassroots Marketing, at left, and James Woodward, a professor at California State University at Fullerton, discuss Woodward's work on a thruster than emits only heat. If it can be scaled up to rocket ship size, this engine could radically transform the way space vehicles are constructed, Woodward said.

Photo by Tom Krazit/CNET News.com