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Into the Impossible With Brian Keating · 5 min · Nov 11, 2026
UFO brightness estimates depend on the assumed light pattern
Kevin Knuth gives very different power estimates depending on whether a 1956 light radiated in all directions or was directed.
In this episode
Full analysis- 7:54Extreme power estimates collide with waste-heat limits6 min
- 22:58Relativistic travel trades short trips for decades on EarthPro pick 4 min
- 27:44A reported underwater object implies extraordinary speedPro pick 3 min
- 13:39A JAL radar analysis found jumps near 10,000 Gs3 min
- 36:18UFO brightness estimates depend on the assumed light pattern5 min
- 17:54Knuth treats acceleration estimates as probability distributions3 min
- 4:07Oberth cited radar-measured UAP speeds in 19543 min
“you're looking at a power of 2,500 to 30,000 megawatts.”
Takeaways
- An isotropic estimate reaches 2,500–30,000 MW at 6–20 km.
- A directed-light assumption cuts the estimate to 1.7 kW.
- A Louisiana report puts the light estimate near 500 MW.
About this segment
Kevin Knuth gives very different power estimates depending on whether a 1956 light radiated in all directions or was directed. A Louisiana case uses scorched trees to estimate hundreds of megawatts of light.
Kevin Knuth is a physics professor at the University at Albany.
Led a multimodal UAP study combining optical, infrared, weather-radar and radiation data.

Brian Keating, Host · Host, Into the Impossible With Brian Keating
From “Physics Professor: How Much Power Does a UFO Really Need?”, Nov 11, 2026. Watch the full episode
Thanks. We'll look at and fix what's off.
Transcript
Transcribed by machine (Whisper) from the episode’s audio, so a word may be off here and there.
- 36:27
to be able to pull this off. You've got to take power to move the object and you've got to displace the water. Insane amount of power. So what other evidence do we have? We have luminosities. Some of these things are really crazy bright. This is one thing that one of the many things that Steven Spielberg got right in Close Encounters of the Third Kind. Yes, people get sunburned from these things so some of them are extremely luminous and so much so that the photographs are difficult to interpret these are all photographs of ufos where they're just glowing and white um they're very bright the this image here taken um in 1956 over the canadian rockies in alberta bruce mccabee and jock valet actually had access to the actual film and counted silver grains to basically figure out what the intensity of light was hitting the camera.
- 37:18
So Dr. Bruce McAbee did study this and Jacques Vallée also summarized and reported. So you can look at the radiance of the object and how that's going to relate to camera parameters. Basically, they measure the exposure levels and the shutter times and estimated the radians to be this much. So it's, well, there's interesting units there. Luminosity units are hard anyway, or radians units, 2 watts per star radian centimeters squared, right?
- 37:45
So for an isotropic source, so if, what do you mean by isotropic? If this thing is radiating uniformly in all directions, then the distance for the distance between the plane and the object, which was estimated to be between 6 and 20 kilometers, you're looking at a power of 2,500 to 30,000 megawatts. That's a lot of light. That's a great amount of light. Right. And I have a bit of a problem with that because if it's putting out that much light and it's close to the clouds, the clouds should be illuminated pretty much as much as the sun is illuminating them. Yeah, that's weird. I then thought, well, let's redo the calculation, assuming that it's a directed light. So it's shining a light on the airplanes. And if you do this, you come down to a lesser power of 1.7 kilowatts. That's not as shocking, but it's still
- 38:42
A kilowatt of light is a lot of light, and that's pretty amazing. Jacques Vallée, Luc Denis, and Geoffrey Mastrzewski had published a paper in Progress in Aerospace Sciences last year where they estimated the radiative energy in ground-level observations based on bark being burnt. So this is the Hainesville, Louisiana case where a physicist actually was driving with his family and they witnessed a pulsating light in the forest which started as a red orange glow and became brilliant white flash eliminating the whole woods and it drowned out the headlights and what professor galloway noted is when it drowned out the headlights he he knew the amount of power in the headlights and he was able to estimate that the light coming from this thing in the forest was had to be megawatts of power that worried him he actually turned the
- 39:39
car around and went the other way drove away from it which was probably a smart idea so the object itself wasn't seen they were able to locate where it had that it had landed it had landed in a clearing in the forest and the trees around the clearing were all scorched from the light from this object so this was actually described in the The Condon Report. And the Condon Report actually recalculated some of these power and actually had a higher amount of power. They did not have a good explanation for what happened, and they left it as an uncertain event.
- 40:11
Yeah, now, when Jacques Vallée and Luc Digny and Jeffrey Mischewski looked at this, they were able to get power estimates closer to 500 megawatts of light. So, that's, again, a crazy amount of light. Humans don't make things that—that's a nuclear power plant's worth of light. this is not a human-made object the minimal power estimates estimates that we're making here and basically in radar recorded maneuvers sonar recorded maneuvers greatly exceed the power produced by nuclear power plants and the minimal power estimates in the luminosity alone are on the order of nuclear power plants this to me is the strongest evidence that we have that we're not dealing with human technology humans don't make vehicles that exhibit the amount of power of a nuclear power plant it just doesn't happen it would be dangerous for us to do that um and it
- 41:07
could be catastrophic here is an interesting point it suggests i mentioned this earlier it's