Unresolved

The Green Fireballs

Catalog FG-013When 1948–1951Where Los Alamos and Sandia, New Mexico

Bright green lights over America's most secret nuclear sites. They came back in the 2026 files.

Starting in December 1948, security guards, pilots and scientists reported vivid green fireballs over nuclear facilities in New Mexico. Meteor expert Lincoln LaPaz saw one himself and argued they did not behave like normal meteors. The Air Force set up Project Twinkle in 1950 to film them with cameras and instruments, but it recorded little before it ended. Reports of green orbs near a military facility appeared again in the 2026 PURSUE releases.

Weigh the evidence

The ledger

What the record shows, what people say, and the best explanation available so far.

What's documented

  • Project Twinkle and the Los Alamos conferences on the fireballs are on record.
  • The 2026 PURSUE releases include a dossier on Sandia Base and green-orb reports.

What's claimed

  • Surveillance of U.S. nuclear sites by something unknown.

Best explanation so far

Many scientists think they were unusually bright meteors, with green coloring from copper or other elements. The cluster near secret sites may partly reflect how many trained observers were posted there.