Dr. White believes that advances he and others have made render warp speed less implausible. Among other things, he has redesigned the theoretical warp-traveling spacecraft — and in particular a ring around it that is key to its propulsion system — in a way that he believes will greatly reduce the energy requirements.

He is quick to offer up his own caveats, however, saying his warp research is akin to a university science project that is just trying to prove that a microscopic warp bubble can be detected in a lab. ”We’re not bolting this to a spacecraft,” he said of the warp technology.

Dr. White was an engineer with a background in the aerospace industry when he came to NASA in 2000, starting his career at the agency by operating the arms of space shuttles. He got his doctorate in physics from Rice University in 2008, and now works on a range of projects aimed at taking NASA beyond the fiery rockets that have long characterized space travel.

For NASA, Dr. White’s warp speed experiments represent a rounding error in its budget, with about $50,000 spent on equipment in an agency that spends nearly $18 billion annually. The agency is far more focused on more achievable projects — building the next generation Orion series spacecraft, working on the International Space Station and preparing for a planned future mission to capture an asteroid.

But it has made internal resources available for the project and freed up other engineers to assist Dr. White. It has also restored the pneumatic system in the laboratory Dr. White is using, to allow it to float. The lab was once used to test equipment for Apollo missions and has control panels underneath it that look like they belong in a fallout shelter that time forgot.

Steve Stich, the deputy director of engineering at the Johnson Space Center, said, “You always have to be looking towards the future.” He held up his iPhone.