Astronauts & Cosmonauts:

"I believe that these extraterrestrial vehicles and their crews are visiting this planet from other planets which obviously are a little more technically advanced than we are here on Earth." — Colonel Gordon Cooper, Mercury & Gemini Astronaut Letter to the United Nations, November 9, 1978 · Video 1 · Video 2

"I happen to be privileged enough to be in on the fact that we have been visited on this planet and the UFO phenomenon is real. It has been covered up by governments for quite some time now." — Captain Edgar Mitchell, Apollo 14 Astronaut Video

"...I've been asked [about UFOs] and I've said publicly I thought they [UFOs] were somebody else, some other civilization." — Astronaut Eugene Cernan, Apollo 17 Commander LA Times, 1973

"I was testing a P-51 fighter in Minneapolis when I spotted this object. [...] It looked like a saucer, a disk. About the same time, I realized that it was suddenly going away from me - and there I was, running at about 300 miles per hour. I tracked it for a little way, and then all of a sudden the damn thing just took off. It pulled about a 45 degree climbing turn and accelerated and just flat disappeared." — Captain Donald Slayton, Mercury Astronaut About his 1951-sighting.

"Statistically it's a certainty there are hugely advanced civilizations, intelligences, life forms out there. I believe they're so advanced they're even doing interstellar travel. I believe it's possible they even came here." — Dr. Story Musgrave, NASA Astronaut

"Look, I have a pension to worry about. I have a family to take care of, and they told me to just back away from this entirely or else." — Astronaut James Irwin, Apollo 15 To Frank Stranges after backing out of speaking at a 1976 UFO convention where he was going to "inform us of the strange things he saw on the surface of the moon".

"It followed us during half of our orbit. We observed it on the light side, and when we entered the shadow side, it disappeared completely. It was an engineered structure, made from some type of metal, approximately 40 meters long with inner hulls. The object was narrow here and wider here, and inside there were openings. Some places had projections like small wings. The object stayed very close to us. We photographed it, and our photos showed it to be 23 to 28 meters away. [...] Many cosmonauts have seen phenomena which are far beyond the experiences of earthmen. For ten years I never spoke on such things. [...] It only flew straight, but then a kind of explosion happened, very beautiful to watch, of golden light. This was the first part. Then, one or two seconds later, a second explosion followed somewhere else and two spheres appeared, golden and very beautiful. After this explosion I just saw white smoke, then a cloud-like sphere." — Cosmonaut Victor Afanasyev Commenting on a UFO sighting that occurred while en route to the Solyut 6 space station in April of 1979.