This topic has a mixed source profile. Half of what follows is Bob Lazar’s first-hand account of a reactor he says he handled, which is unverifiable. The other half is a published physics framework, from a credentialed physicist, for how such a thing could in principle work. Neither half proves the other. The page sets out both: Lazar’s account of how one of these craft might function, and the framework offered for how it could.
The reactor
According to Lazar, the Sport Model’s power source is a basketball-sized hemisphere on a 15-inch square base plate. X-rays revealed an internal particle accelerator, a small cyclotron, bombarding a target. The target is Element 115, which he named in 1989, fourteen years before mainstream science synthesised it in 2003. The synthetic version lasted milliseconds; Lazar says his S4 sample was a stable isotope sitting on the predicted “island of stability” of super-heavy elements. Around the reactor sit three wave-guide emitters he called gravity amplifiers: in one configuration all three contribute to lift, in another they focus on a single distant point and the craft travels in short pulsed jumps with a 10-millisecond recycle between each. He says nothing is wired together, and that power and signal arrive wirelessly.
All of this is Lazar’s testimony, the most contested account on this site, so it stands as one man’s detailed memory rather than a verified schematic.
The demonstrations
Lazar’s lab partner, Barry Castillo, is said to have shown him the reactor’s effects three times. First, an impenetrable force field: Lazar tried to put his hands on the sphere and couldn’t, the first few inches gave, then nothing, and he says the reactor never pushed back, it simply stopped him. Second, the candle: placed at the focal point of an amplifier, the flame stopped moving, though Lazar could still see photons leaving it, and Barry said it was frozen in time. In 2026 Lazar added a detail cut from the original documentary, a mechanical wristwatch at the same focal point also simply stopped. Third, a small black sphere: rotate the emitter further and a tennis-ball-sized dark point formed in the air where light bent away, which Lazar called a tiny black hole that left the rest of the room untouched.
These are extraordinary claims, and they are entirely Lazar’s word. Nobody else witnessed them and nothing was recorded. As an account they describe physics we do not have; as evidence they are testimony.
“I’m increasingly convinced that there’s another force of nature. We call this antigravity because there’s nothing else to call it. But I think there’s another force that we haven’t discovered. And that’s what this machine is taking advantage of.” Bob Lazar, 2026 (DEBRIEFED ep. 83)
Hal Puthoff’s framework
Puthoff has spent his career building a physics framework that would, in principle, allow what Lazar describes. He calls it metric engineering: model spacetime as an optical medium with a variable refractive index, learn to engineer that index locally, and you can warp the metric. Warp the metric and you no longer move the craft, you move the bubble of space around it. He wrote it up for the DIA in 2010, in a now-declassified reference document, and it builds on Miguel Alcubierre’s 1994 warp-drive paper, which sits in the peer-reviewed general-relativity literature. The framework is not proven. Puthoff’s proposal is that if it is right, the Sport Model would feel neither inertia nor air resistance, which he notes is what Lazar’s described observations would require.
What is open in the file
The two halves do not touch. Lazar’s demonstrations cannot be re-run, because they are memory. Puthoff’s framework can be argued, developed and tested in the open literature, and the point at which Lazar’s account becomes falsifiable is the claimed stable isotope of 115 (see The Bismuth Thread). The framework remains unproven and the isotope claim remains untested; those are the two threads still open in the file.
Sources for this page
- The Age of Disclosure roundtable (Hal Puthoff)
- Bob Lazar Tells Me Everything (DEBRIEFED ep. 83)
- Puthoff (2010), “Advanced Space Propulsion Based on Vacuum (Spacetime Metric) Engineering,” DIA reference document