astronomers. They reviewed thousands of photographic plates taken by the Palomar Observatory from 1952 to 1957 prior to the launch of Sputnik, the first man made satellite launched into space. They found numerous “transients”, which are dots in the images that don’t correspond to stars in the sky, and which did not appear on subsequent photos taken 45 or 50 minutes later. The transients correlate with nuclear bomb detonations, and with increased UFO reportings, including the well known UFO sightings over Washington D.C. in 1952. The astronomers were able to rule out conventional explanations including imperfections on the plates with a high degree of statistical significance — 22σ.

The most important thing to keep in mind is that there is zero evidence that intelligent, space-faring aliens have ever visited this planet.

state the extraterrestrial explanation as a conclusion, but the lead scientist on the project, Dr. Beatriz Villarroel, has asserted this conclusion as her opinion in several interviews. She says that these transients appear to be highly reflective fabricated objects with flat surfaces, and they’re clearly not ours. And actually, there’s quite a bit of evidence supporting the extraterrestrial hypothesis. Testimony from credible witnesses is one type of evidence, called case history. There are also many recorded conversations between pilots and air traffic control, and between air traffic control and NORAD, that happened during encounters. These are frequently corroborated by radar. But evidence is not proof.

Personally, I suspect this is something more mundane, but I’m willing to keep an open mind.

I'm a believer. There's a lot of ancient history that makes extraterrestrial sense to me.