A mysterious aircraft was reportedly spotted near the highly classified Area 51 base, sparking speculation that it could be a secret military prototype.

A thermal image appears to show a triangular-shaped craft flying close to the infamous testing facility in Nevada, long associated with some of America’s most closely guarded aerospace programs.

The image was shared online by the Project Fear YouTube channel, which described it as ‘a craft the public has never seen before.’

Some observers believe the object could be a classified X-plane, a highly experimental aircraft used to test advanced technologies before they enter military service.

For decades, Area 51 has served as the premier testing ground for these secretive ‘black projects,’ including spy planes and stealth aircraft that remained hidden from the public for years.

The unusual shape of the craft has fueled speculation that it may be linked to a next-generation military aircraft. Among the theories circulating online is that it could be the Boeing F-47, the future centerpiece of the US Air Force’s Next Generation Air Dominance program.

Others have suggested it could be an entirely separate classified aircraft being developed for future military operations.

While no official explanation has been provided, the sighting has reignited debate over what exactly is being flown behind the fences of America’s most secretive air base.

Several groundbreaking military programs, including stealth and reconnaissance aircraft, were flown at the remote Nevada facility years before they were publicly acknowledged.

Project Fear said on X that the image was captured using a 10-micron thermal scope.

While the identity of the aircraft remains unknown, some observers have speculated that it could be Boeing’s F-47, the centerpiece of the US Air Force’s Next Generation Air Dominance (NGAD) program.

The sixth-generation fighter is expected to serve as a flying command hub, coordinating swarms of AI-powered drones alongside piloted aircraft in future combat operations.

Reports have suggested that prototype aircraft are already under development, with operational deployment anticipated in the early 2030s.

Read More: Mysterious triangular aircraft spotted over Area 51 sparks secret tech theories