[*] In 1954, a marine corps naval aviator, writer, and UFO research named Donald Keyhoe said that the U.S. Air Force had detected two satellites orbiting Earth. This was 3 years prior to the first human made satellite, Sputnik 1, being launched.
[*] One theory suggests that the origin of the Black Knight satellite isn’t alien but actually an ancient human creation. The idea here is that an ancient race of humans (or other intelligent, non-human animals on Earth) were scientifically advanced and launched the satellite before becoming extinct.
