The Disclosure Project’s 25th-anniversary press conference at the National Press Club on Friday 8 May 2026 will now include a featured segment on the so-called Buga sphere, an alleged metallic artefact recovered in Buga, Valle del Cauca, Colombia in March 2025. Steven Greer announced the inclusion through a PR Newswire distribution on 29 April 2026. The release names Mexican broadcaster Jaime Maussan as a special guest who will join Greer in presenting scientific scans and test results, including a claim that resin attached to the object was carbon dated to approximately 12,560 years before present.
The addition is a meaningful shift in the evidentiary profile of the event. Greer’s press conference has, until this point, been built around military and government witness testimony: a US Army Green Beret describing an alleged underground facility in Indiana housing non-human artefacts, US Marines describing human-built UAP encounters, and policy recommendations for executive and congressional action. The Buga segment introduces a physical-artefact claim with a chain of custody that runs through Maussan, whose previous public presentations have included the 2017 Nazca “alien mummies” and other contactee material that the Mexican Congress, UNAM scientists, and a wide range of independent researchers have rejected.
What Is the Buga Sphere
On 2 March 2025, residents of Buga reported a small spherical object descending silently over the city. The object was recovered, photographed, and circulated on local Colombian television. Witnesses described a seamless metallic shell, an internal structure of micro-spheres visible through a small aperture, and surface markings that some observers compared to glyphs.
The object passed quickly to Maussan, who toured it through 2025 on the Mexican programme Tercer Milenio and announced a March 2026 Mexico City presentation with proponent scientists. Maussan’s team commissioned testing and asserted the resin sample’s carbon date through the University of Georgia’s Center for Applied Isotope Studies.
The Claims and the Counter-Claims
The carbon-dating claim sits at the centre of the controversy. The University of Georgia Center for Applied Isotope Studies has not publicly confirmed analysing the sample. UNAM has not publicly confirmed any institutional involvement. No peer-reviewed paper has been published on the object. The 12,560-year figure has circulated through Maussan’s broadcasts, secondary disclosure-aligned outlets, and now the 29 April Disclosure Project release, but it has not been independently verified.
Independent researchers have raised structured objections. Dr Julia Mossbridge, a cognitive neuroscientist at the University of San Diego, has publicly assessed the object as ninety-nine percent likely to be a sophisticated art project designed to test public belief, citing modern fabrication techniques such as superplastic forming and magnetic pulse welding that produce seamless joints invisible to casual inspection. Dr Garry Nolan, the Stanford immunologist whose UAP material analysis has anchored mainstream coverage of the topic since 2023, has separately questioned the Buga object’s provenance.
The Metabunk thread on the carbon dating, active through late 2025, concluded that the resin date, even if accurate, would only establish the age of the resin, not the age of the metallic shell or the date of any alleged technological event. Resin can be sourced from millennia-old amber or fossilised organic material and applied to a recently fabricated object.
Why This Matters for the 8 May Event
The 2001 Disclosure Project briefing at the same National Press Club venue presented military and intelligence witnesses speaking on the record about UAP and recovered materials. That event is the editorial benchmark for the 25th anniversary, and for much of the modern disclosure movement.
Adding the Buga sphere to the 2026 programme means the evening will combine on-the-record whistleblower testimony with an artefact claim whose provenance and dating remain disputed by named scientists and unanchored to any peer-reviewed institution. Whether the press in attendance treats the two strands separately, or whether mainstream coverage absorbs the Buga claim into the broader testimonial picture, will shape how the event is understood.
The Disclosure Project announcement gives Maussan a National Press Club platform in the United States. That platform carries different weight than Tercer Milenio segments or contactee-circuit conferences in Latin America, and it places the Buga sphere in proximity to Greer’s policy recommendations for presidential executive action and congressional initiatives.
What to Watch on 8 May
The press conference runs from 3:00pm to 4:30pm Eastern at the National Press Club Ballroom, 529 14th Street NW, Washington, DC. Doors open at 2:00pm. Greer’s event listing confirms a full-day workshop on 9 May.
Three threads are worth tracking in real-time coverage:
First, whether Greer or Maussan present any chain-of-custody documentation or laboratory paperwork that has not previously circulated, including any direct correspondence with the University of Georgia Center for Applied Isotope Studies.
Second, whether the previously announced whistleblower testimony, particularly the Indiana-facility account from the Green Beret and the Marine accounts of human-built UAP, holds the editorial centre of the press conference, or whether the Buga segment becomes the headline.
Third, whether mainstream wire services that have followed Trump’s UAP file-release pledge and Anna Paulina Luna’s outstanding 46-video subpoena demand attend the event and how they frame the artefact claim against the testimonial material.
Cross-References on the Site
The 25th-anniversary Disclosure Project press conference is on the timeline at /timeline/2026-05-08-greer-disclosure-project-25th-anniversary-press-club/. The Buga sphere’s original recovery and the 29 April programme announcement are now also on the timeline. The general public-record overview of UAP disclosure is at /posts/what-is-uap-disclosure/.
A follow-up article will be filed on Friday 8 May or Saturday 9 May once the Press Club event has run.