Most UFO sightings involve a single observer, which makes it tough to convince skeptics that the event wasn’t just a trick of the mind. Yet, there are cases where several people have simultaneously witnessed the phenomenon, and that completely shifts the narrative. Below we count down the top 10 little‑known multi‑witness UFO incidents that have left both the public and investigators baffled.
10 Hudson Valley Sightings
Why the top 10 little sightings matter
As the Fourth of July fireworks began to light up the Hudson Valley sky in late June 1983, a low‑drone hum cut through the celebratory blasts, heralding the arrival of a massive disc‑shaped object described as “about the width of sixteen or seventeen houses!”
The craft hovered silently above the crowd; the humming ceased, and the disc hung in the air, unnervingly still. Minutes later the hum returned, and the object shot away at extraordinary speed.
This episode was one of many sightings recorded in the valley during the early 1980s, but it stood out because of the sheer number of eyewitnesses who reported the event.
On March 24, 1983, a surge of reports about strange lights and a mysterious craft in Yorktown overwhelmed the town’s switchboard. The Taconic Parkway became a traffic jam of stunned drivers who stopped their cars to stare skyward at the presumed UFO gliding overhead.
9 Arthur Kill River Incident
During the night of July 14‑15, 2001, a group of at least fifteen onlookers reported golden‑orange lights forming a V‑shaped pattern over the Arthur Kill River along the New Jersey Turnpike. Witnesses debated whether the lights were separate objects or part of a single, larger V‑shaped craft.
Other observers described a more scattered arrangement, noting that the lights faded one by one into the darkness. Newark Airport was contacted, but radar revealed nothing unusual, and the National Weather Service confirmed clear skies that evening.
Veronica Bagley managed to record the phenomenon on video, while Patty Ercallino called the experience “very peaceful, very serene, and very beautiful,” even suggesting it might have been a “miracle.”
8 The Cosford Incident
UFO researcher Nick Pope reported that over a hundred individuals saw an unidentified craft on the night of March 30‑31, 1993, across western England. Many of those who reported the sighting were police officers or military personnel, and Pope investigated the case while serving with the British Ministry of Defence.
The majority described a triangular object moving at a breakneck pace. One policeman, accompanying a scout group on the Quantock Hills in Somerset, likened the craft to “two Concordes flying side by side and joined together.” Additional reports came from Cornwall, Devon, the West Midlands, and two RAF bases—Shawbury and Cosford—yet neither base detected the craft on radar. Pope deemed the incident of “considerable defence significance” and urged further inquiry.
7 Ellsworth Air Force Base Sighting
On the evening of August 5, 1953, a sizable group of military personnel at Ellsworth Air Force Base, along with 45 nearby residents, observed a bizarre aerial event. The first report came just after 8:00 PM from Mrs. Kellian, a volunteer with the Ground Observer Corps, who saw a vivid red glow high in the clear night sky.
Following protocol, she immediately relayed the sighting to the base’s radar operator. The object was picked up on radar, heading straight for the base, prompting an F‑84 jet on patrol to investigate.
When the F‑84 approached within five kilometres, the UFO accelerated away. A second F‑84 pilot also visualized the disc, but both aircraft experienced strange malfunctions and could not keep pace, ultimately returning to base.
6 Exeter
Norman Muscarello was hitchhiking home near Exeter, New Hampshire, in the early hours of September 3, 1965, when he spotted a bright light racing toward him. He dove onto the roadside to avoid being struck, only for the object to swerve away at the last second, prompting him to flee the area.
Earlier, Officer Eugene Bertrand had encountered a frightened woman in a parked car who claimed a “flying object” was chasing her. Bertrand, assuming she was mistaken, dismissed her concerns and continued his patrol.
Around 3:00 AM Muscarello arrived at the Exeter Police Station, where Bertrand later joined him to investigate the reported sighting. Both men returned to the same stretch of Route 150, where the craft reappeared, approached them, and then vanished, leading to a flood of additional reports.
5 The Greifswald Lights
Beginning in early August 1990, residents along the Baltic Sea coast reported strange spherical lights. By August 24, the phenomenon had moved inland, with townspeople in Greifswald, eastern Germany, observing the luminous spheres hovering motionlessly for roughly thirty minutes.
The event appeared to involve two distinct clusters. The first formed a circle that remained largely still, moving only as a single unit. The second cluster arranged itself in a Y‑shape, with the lights moving independently of one another.
Both the Mutual UFO Network (MUFON) and mainstream scientists have been unable to provide a satisfactory explanation for the Greifswald lights, leaving the case one of the most thoroughly documented yet unresolved sightings.
4 Fort Beaufort
Bennie Smit, a farmer near Fort Beaufort in South Africa’s Eastern Cape, was convinced that he and his workers had witnessed a secret military craft on June 26, 1972, rather than an extraterrestrial vessel.
When the workers gathered in a shed, they reported a strange object hovering above a field. Smit inspected the scene himself and, believing the craft to be a top‑secret aircraft, opened fire with his .303 rifle. The bullets struck the object but caused no apparent damage.
Local police arrived just in time to see the craft land. The UFO resembled an oil drum with three distinct legs. Sergeant Kitching also fired at the object, prompting it to shift colors—from black to green, then yellow, and finally a pale white—before it lifted off, emitting a whirring sound.
The whirring grew louder as the craft ascended, then faded as it vanished from view.
3 Sighting Over Houston Goes Viral Online
On August 11, 2014, hundreds of Houstonians observed a circle of lights hovering in the evening sky. Photographs quickly spread across social media, and video footage later showed the lights moving independently rather than forming a static circle.
Dr. Carolyn Sumners of the Houston Museum of Natural Science warned against jumping to alien conclusions, urging investigators to consider alternative explanations before attributing the phenomenon to extraterrestrials.
Witnesses offered varied theories: some believed the lights were alien, while others suspected a government drone or reflections from a nearby football stadium.
2 Mass UFO Sighting During Baseball Game
During a 2013 minor‑league baseball game between the Vancouver Canadians and the Everett AquaSox, the crowd’s attention was diverted to a strange triangular object with illuminated edges hovering over the field.
Initial speculation ranged from a remote‑control helicopter to a possible government drone, but a local newspaper suggested the most likely source was a remote‑controlled device.
Weeks later, it was revealed that the sighting was a marketing stunt designed to promote a new planetarium theater at Vancouver’s H.R. MacMillan Space Center, explaining why the city recorded an unusually high number of UFO reports that year.
1 The Trindade UFO Incident
In October 1957, the Brazilian Navy established a scientific research station on the remote island of Trindade. By January 1958, the garrison began reporting a series of bizarre UFO encounters.
On New Year’s Day, the entire base witnessed a bright light sweeping across the sky. The following evening, a luminous object circled one of the navy ships for ten minutes, executing rapid, precise maneuvers.
On January 6, Commander Carlos A. Bacellar launched a weather balloon, only to see its telemetry cease as the balloon was seemingly “sucked” into a cloud and vanished. Minutes later the balloon re‑emerged, stripped of its instruments, while a silver object emerged from the same cloud.
On January 16, the crew of a navy vessel off Trindade observed a bright object moving directly over the ship toward the island. Photographs captured by an onboard observer were promptly released to the press, cementing the incident’s place in UFO history.