The Buga Sphere: Colombia's Mysterious Metallic Orb -

In early 2025, a seamless metallic sphere was found near Buga, Colombia. Scientists who examined it say its construction defies known manufacturing. Others say it looks like art. Here is what has been tested, what remains unexplained, and why a second sphere appeared in San Diego a year later.

TL;DR: A seamless metallic sphere, initially reported as a UFO, was recovered near Buga, Colombia, in early 2025 following reports of an unidentified flying object. The object, roughly the size of a bowling ball, has no visible welds, joints, or assembly marks. Scientific analysis between May and July 2025 by researchers from Colombia and Mexico found an internal structure containing copper contacts and fiber-like filaments. Some researchers claim the object defies known manufacturing processes. Other scientists say it resembles a manufactured art piece. A second similar sphere was reported in San Diego in February 2026. As of March 2026, independent peer-reviewed verification remains pending. Sources linked below.

Timeline

Early 2025 Reports surface on social media of an unidentified flying object near the city of Buga, in Colombia’s Valle del Cauca department. A metallic sphere is recovered from the ground, partially embedded in soil.

May 25, 2025 The discovery goes viral after social media account @Truthpolex, which labels its content as entertainment, posts video of the sphere. Newsweek and LiveMint cover the story. Colombian radiologist Dr. Jose Luis Velasquez, a medical imaging specialist, inspects the object and finds no weld marks, declaring it of extraterrestrial origin.

May to July 2025 A multi-disciplinary team of researchers from Colombia and Mexico conducts a formal scientific investigation of the sphere. Methods include X-ray radiography, CT scanning, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and hardness testing. The National Autonomous University of Mexico (UNAM) performs a detailed metallurgical study.

June 20, 2025 Analysis results are presented publicly in Mexico City. Researchers describe an internal structure containing copper-rich contacts, fiber-like filaments resembling optical circuits, and distinct internal components visible in CT scans.

July 2025 Dr. Steven Greer, a prominent UAP disclosure advocate, publicly calls for additional testing on the sphere, including carbon dating and isotope analysis, to determine its age and origin.

February 2026 A second metallic sphere, dubbed the “Dread Sphere,” is reportedly recovered in San Diego, California, during a livestream. The object’s similarities to the original sphere generate widespread online discussion.

March 2026 Reports emerge that Stanford University researchers have performed advanced CT mapping of the sphere’s interior, claiming that an internal component has shifted position since earlier scans.

The Buga Sphere: Colombia’s UFO Mystery

The Buga Sphere is a polished, silvery metallic orb approximately 50 centimeters in diameter, roughly the size of a bowling ball. It weighs approximately 2 kilograms (about 4.5 pounds). Its surface is smooth and unbroken, with no visible weld lines, joints, or assembly marks of any kind.

The sphere’s exterior is engraved with an array of symbols and geometric patterns. Experts in ancient scripts have noted that the markings bear resemblance to characters from runic, Ogham, and Mesopotamian writing systems, alongside circuit-like geometric motifs. The engravings appear to have been inscribed by mechanical or laser tooling, with consistent depth and technique visible under high-magnification imaging.

Embedded in the surface are small metallic pins or contacts, roughly a dozen or more, each a few millimeters across. These pins are flush with the sphere’s shell and are composed of a copper-rich metal. They are arranged in a symmetrical pattern that corresponds to the positions of internal components.

The object was found partially embedded in soil near Buga following reports of an unidentified flying object in the area. The exact date of recovery has not been confirmed by official sources. Documentation of the discovery comes primarily through social media and video evidence, with no government agency or established scientific institution present at the time of recovery.

The Scientific Investigation

Between May and July 2025, researchers from Colombia and Mexico conducted what they describe as a rigorous, multi-disciplinary analysis of the sphere. The investigation employed the following methods:

X-ray radiography and CT scanning were used to probe the sphere’s interior without full destruction. Led by Colombian radiologist Dr. Jose Luis Velasquez, the scans revealed distinct internal components and required calibration for the sphere’s unusually high density and strong X-ray absorption. Computed tomography produced a 3D model of the internal structure and mapped material density distribution.

Scanning electron microscopy (SEM) at up to 2,000x magnification was performed by researchers at UNAM. This revealed microscopic features including fine wire-like or fiber-like filaments inside the sphere, tiny conductive pathways, and layered structural details invisible to the naked eye.

Energy-dispersive X-ray spectroscopy (EDS) was used to determine the elemental composition of the metal alloy. The analysis identified common metallic elements including aluminum, copper, and silicon, distributed across various parts of the sphere.

Hardness testing (Brinell and Vickers methods) compared the sphere’s metal to known aerospace alloys, providing quantitative hardness measurements.

Physical property measurements included mass tracking over time, thermal behavior tests, magnetic and electromagnetic property assessments, and radioactivity screening with Geiger counters. No radiation above background levels was detected.

According to the published analysis, the sphere’s mass was approximately 2.0 kg upon recovery. Some researchers reported that the sphere’s weight appeared to fluctuate over time, a claim that has drawn significant skepticism. Weight fluctuation in a solid metal object would violate known physical principles, and no independent laboratory has replicated this observation.

What the Analysis Found

The scientific investigation produced several notable findings, as documented in the published report:

No seams or welds. Both visual inspection and X-ray imaging confirmed that the sphere has no visible joints, weld lines, or assembly marks. The report states the shell “might have been cast or machined from a single piece of material or fused together with extraordinary precision.”

Internal structure. CT scans revealed distinct internal components within the sphere. Copper-rich pins on the surface connect internally to fine filamentary wires or fibers, forming what the researchers describe as “a network akin to an integrated circuit.” SEM imaging confirmed thread-like structures resembling optical fibers.

Standard metallic composition. EDS analysis found common metallic elements including aluminum, copper, and silicon. The alloy composition, while documented, was not described as containing unknown or exotic elements in the available published findings.

Surface engravings. Microscopic inspection showed the engraved symbols have consistent depth and technique, suggesting mechanical or laser inscription. No paint or pigmentation was present; the symbols are grooves cut into the metallic surface.

No radioactivity. Geiger counter readings showed normal background radiation levels.

The researchers have described these findings as anomalous, noting that the seamless construction, internal circuitry, and surface engravings do not match known manufacturing processes for objects of this type.

The Skeptical Case

Not all scientists agree that the Buga Sphere represents unexplained technology. Dr. Julia Mossbridge, founder of the Mossbridge Institute and a researcher affiliated with multiple universities, told Newsweek she suspects the sphere is “a piece of artwork.”

“It looks so human-made to me,” Mossbridge said. While she acknowledged the object has generated valuable public conversation about UAP phenomena, she cautioned that unverified claims about the sphere could “discredit actual UAP investigations.”

Skeptics have raised several specific concerns:

The social media origin. The sphere was first publicized by the @Truthpolex account on X, which labels its content as entertainment. The initial viral coverage came through social media rather than through peer-reviewed scientific channels.

Manufacturing capabilities. While the researchers describe the seamless construction as anomalous, industrial processes exist for creating seamless metal spheres. Powder metallurgy, electroforming, and centrifugal casting can produce objects with no visible weld lines.

Alloy composition. The EDS analysis found common metals, including aluminum, copper, and silicon. These are terrestrial materials. No exotic or previously unknown elements were reported in the available findings.

Lack of peer review. As of March 2026, the scientific findings have been presented publicly and published on research platforms, but have not undergone formal peer review in established scientific journals. Independent verification by researchers not involved in the original investigation remains pending.

Engravings as art. The symbols on the sphere’s surface, while described as resembling ancient scripts, have not been definitively matched to any known writing system. Skeptics note that creating fictional or composite scripts is a practice common in contemporary art and fabrication.

The San Diego Sphere

In February 2026, a second metallic sphere was reportedly recovered in San Diego, California. Dubbed the “Dread Sphere” by online communities, the object was allegedly captured during a livestream. The circumstances of its discovery and physical similarities to the original sphere generated widespread discussion in UAP communities.

No scientific analysis of the San Diego sphere has been publicly reported as of March 2026. The object has been discussed primarily through social media and YouTube channels. No established scientific institution or government agency has confirmed its existence or begun formal examination. The relationship between the two objects, if any, remains entirely unestablished.

Stanford Analysis and Ongoing Research

In March 2026, social media reports and YouTube videos claimed that researchers at Stanford University had performed advanced computed tomography mapping of the sphere’s interior. According to these claims, the scans revealed that an internal component had shifted position since earlier imaging, suggesting the sphere contains moving parts or that its internal structure is not static.

These claims have not been confirmed through any published research paper, official Stanford statement, or peer-reviewed channel as of March 29, 2026. The source material for this claim consists primarily of YouTube videos and social media posts, not scientific publications.

No government agency, either in Colombia or the United States, has officially acknowledged or investigated the sphere. The Pentagon’s All-domain Anomaly Resolution Office (AARO), which tracks UAP reports from military personnel, has not included the object in any of its published assessments. Colombian authorities have not issued public statements about the object. This absence of official engagement is notable given the public attention it has received.

Dr. Steven Greer, a UAP disclosure advocate, has continued to call for additional testing, including carbon dating and isotope analysis, which could determine the sphere’s age and provide evidence for or against terrestrial manufacturing.

The investigation into the sphere is ongoing. No definitive conclusion about the object’s origin has been reached by the scientific community. The published analysis has not undergone formal peer review, and independent verification by unaffiliated researchers remains the key missing step.

Opposing Perspectives

The object sits at the intersection of scientific inquiry and UAP speculation, and the evidence so far supports multiple interpretations.

The case for anomalous origin: Proponents point to the seamless construction, the internal circuit-like structures, the untranslatable surface symbols, and the reported weight fluctuations as evidence that the sphere is not a conventional human artifact. The multi-disciplinary analysis by researchers from Colombia and Mexico documented features they describe as inconsistent with known manufacturing. The appearance of a second similar sphere in San Diego adds to the pattern, proponents argue.

The case for human manufacture: Skeptics note that the alloy composition uses common terrestrial metals. Industrial processes can produce seamless metal spheres. The surface engravings could be created with modern laser tools. The internal structures described could be consistent with commercial electronics enclosures. The social media origin of the story and the lack of peer-reviewed verification raise questions about the chain of custody and potential contamination of evidence. Dr. Mossbridge’s assessment that the sphere “looks human-made” reflects a broader skepticism in the scientific community.

The evidence gap: What would settle the debate? Isotope analysis could determine whether the metal matches terrestrial sources. Carbon dating could establish the age of any organic components. Independent replication of the internal structure findings by researchers not involved in the original investigation would add credibility. As of March 2026, none of these tests have been completed and published through peer-reviewed channels.

Until independent, peer-reviewed analysis reaches a conclusion, the Buga Sphere remains an unexplained object with conflicting expert assessments. What is clear is that the object exists, has been physically examined, and the scientific community has not yet reached consensus on what it is. Whether that consensus will come from carbon dating, isotope analysis, or examination of the San Diego sphere remains to be seen.

The Buga Sphere: Colombia’s Mysterious Metallic Orb