Les Johnson is a NASA physicist and author. By day, he serves as the senior technical assistant for the Advanced Concepts Office at the NASA George C. Marshall Space Flight Center in Huntsville, Alabama. In the early 2000s, he was NASA's manager for interstellar propulsion research and later managed the In-Space Propulsion Technology Project. He is the author of Rescue Mode, coauthored with Ben Bova, as well as Back to the Moon and On to the Asteroid, both coauthored with Travis S. Taylor.
