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The "Black Knight" object photographed on STS-88
December 11, 1998 · Low Earth orbit over the South Atlantic Ocean, west of southern Africa (Space Shuttle Endeavour, STS-88)
Space
UAP · Other · 28 sources · 6 photos
64Well documented
The STS-75 Tether Incident
February 1996 · Low Earth orbit, aboard Space Shuttle Columbia (STS-75)
Space
UAP · Orb / light · 42 sources · 1 photos
44Partially documented
The STS-48 "Zig-Zag UFO" video, Space Shuttle Discovery
September 15, 1991 · Earth orbit, Space Shuttle Discovery (reportedly over the Indian Ocean, near the day-night terminator)
Space
UAP · Unknown · 31 sources
23Thinly documented
Musa Manarov's Mir UFO video (1991)
May 20, 1991 · Mir space station, low Earth orbit
Space
UAP · Cigar · 23 sources
29Thinly documented
Vladimir Kovalyonok's Salyut 6 sighting
May 5, 1981 · Earth orbit aboard Salyut 6, over the area of South Africa moving towards the Indian Ocean
Space
UAP · Other · 31 sources
18Thinly documented
Skylab 3 "bright reddish object" sighting and photographs
September 20, 1973 · Skylab space station, low Earth orbit
Space
UAP · Unknown · 19 sources · 2 photos
40Partially documented
Pro early
The Hines Creek Scalloped Object (Tachit Family Sighting)
July 16, 1969 · Tachit farm, 14 miles southwest of Hines Creek, Clear Hills County, Alberta
Canada
UAP · Other · 11 sources
17Thinly documented
Gemini 11 "Wingman" Photographs
September 13, 1966 · Earth orbit, over Tananarive (Antananarivo), Madagascar
Madagascar
UAP · Other · 16 sources · 9 photos
42Partially documented
The Gemini 7 "Bogey": Borman and Lovell's Sighting in Earth Orbit
December 4, 1965 · Low Earth orbit, aboard Gemini 7 (launched from Launch Complex 19, Cape Kennedy, Florida)
Space
UAP · Other · 22 sources
30Partially documented
Gemini 4: James McDivitt's "cylinder with a pole"
June 4, 1965 · Earth orbit over the Hawaiian Islands (Gemini 4, 20th revolution)
United States
UAP · Cylinder · 25 sources · 1 photos
34Partially documented
John Glenn's Friendship 7 "Fireflies"
February 20, 1962 · Earth orbit over the Pacific, within radio range of the Canton Island tracking station
Kiribati
UAP · Other · 16 sources · 1 photos
30Partially documented
Elizabeth Klarer and Akon of Meton
April 1956 · Flying Saucer Hill, near Rosetta, Natal (KwaZulu-Natal), Drakensberg foothills
South Africa
UAP · Being / humanoid · 30 sources · 2 photos
29Thinly documented
  • Central Intelligence Agency· 1990-01-01· 53 pages· 32 pages mention it
    • p. 30 …injection of orbiter from Mars satellite orbit to trans-Earth trajectory: 0.5-1.5 km/s (depending on Mars…
    • p. 33 …acceleration from a low, near-Earth orbit to a high, injection orbit (beyond the Earth's radiation belts), during which…
  • NASA· 40 pages· 11 pages mention it
    • p. 9 …engine shutdown with the capability to allow one orbit of the Earth before landing at the Kennedy Space Center, FL…
    • p. 16 …Orloff, 01/2001/Page 16 Earth's Charged-Particle Environment and the Tethered Satellite System TSS-1R will make use…
  • All-domain Anomaly Resolution Office· 19 pages· 4 pages mention it
    • p. 1 …2 Altitude for Low Earth Orbit (LEO) ranges from 300km to 2,000km.
    • p. 18 All-domain Anomaly Resolution Office (AARO) 18 Acronyms Acronym Definition AARO All-domain Anomaly Resolution Office LEO Low Earth Orbit…
  • Department of Defense. Office of the Secretary of Defense.· 2023· 18 pages· 5 pages mention it
    • p. 1 …2 Altitude for Low Earth Orbit (LEO) ranges from 300km to 2,000km.027Page determined to be Unclassified Reviewed by…
    • p. 18 …Boley, "Satellite mega-constellations create risks in Low Earth Orbit, the atmosphere and on Earth," Scientific Reports (Nature), vol. 11…
  • Central Intelligence Agency· 1977-08-05· 2 pages· 1 page mentions it
    • p. 1 …The "Prognoz-6" station has been put into a highly elliptical orbit as an earth satellite, with the following parameters…
  • Central Intelligence Agency· 1977-09-23· 2 pages· 1 page mentions it
    • p. 1 …The "Prognos-6" station has been put into a highly elliptical orbit as an earth satellite, with the following parameters…

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