Documented sightings from the 1950s, sorted from most recent.
Anglican priest and 37 witnesses observed a hovering disc with humanoid figures who appeared to wave back when greeted, over a Papua New Guinea mission station.
Nine hikers died under bizarre circumstances in the Ural Mountains; the lead investigator believed the deaths were connected to reported luminous objects in the area.
French soldiers during the Algerian War observed an enormous elliptical craft estimated at 250-350 meters wide, emitting green light and a concentrated beam, part of a pattern of wartime UFO sightings.
A photographer aboard a Brazilian Navy ship captured photos of a Saturn-shaped UFO over Trindade Island, endorsed by the Navy and the President of Brazil.
At least 15 independent witnesses near Levelland, TX reported a glowing object that killed vehicle engines and headlights at close range.
Brazilian farmer Antônio Villas Boas reported the first widely-documented modern abduction case - including a medical exam and a sexual encounter - in October 1957, four years before Betty and Barney Hill.
Anonymous fragments allegedly recovered from an exploding UFO off Brazil's São Paulo coast were tested at multiple labs and found to be 99.9%-pure magnesium - one of the longest-running physical-evidence cases in UFO history.
A USAF RB-47 reconnaissance bomber tracked an object on radar, electronic countermeasures, and visually for 700+ miles across multiple states.
Multiple radar stations and a fighter jet tracked UFOs over two RAF bases; the Condon Committee called it 'the most puzzling case in the radar-visual files.'
The Sutton family reported hours-long siege by small luminous beings at their Kentucky farmhouse, prompting a multi-agency investigation.
An entire Serie A football match in Florence stopped when ~10,000 spectators watched cigar-shaped craft cross the sky and 'angel hair' fibers fell on the stadium - University of Florence chemists analyzed the residue.
A secret CIA-sponsored panel of scientists met for four days in 1953 and recommended systematic debunking of UFO reports, establishing government policy that shaped the cover-up narrative for decades.
During NATO's first major maritime exercise, US, UK, Danish, and other allied crews logged multiple radar+visual UFO sightings across the North Sea - one of the earliest multinational military UAP clusters.
A group in Flatwoods, WV encountered a tall hissing entity near a glowing landed object, leaving witnesses physically ill during the 1952 UFO wave.
UFOs tracked on radar over the nation's capital on two consecutive weekends, triggering jet scrambles and the largest Pentagon press conference since WWII.
Navy photographer Delbert Newhouse filmed bright maneuvering objects over Utah; Navy analysis concluded they were 'intelligently controlled vehicles.'
V-formations of bluish-green lights observed by Texas Tech professors and photographed by a student became a classic unsolved Project Blue Book case.
Nick Mariana filmed two bright rotating discs over Great Falls, Montana, producing one of the earliest credible pieces of UFO film evidence.
Paul and Evelyn Trent photographed a metallic disc over their Oregon farm, producing the most analyzed and authenticated UFO photos in history.
Approximately half the population of Farmington, New Mexico witnessed hundreds of silvery objects maneuvering across the sky in a massive two-day aerial display.