Conspiracy theorists, UFO enthusiasts and amateur Internet sleuths, rejoice! Forty-six years after the conclusion of Project Blue Book, a secret U.S. Air Force investigation into reported UFO sightings, the project’s declassified files are now available online for free.

Project Blue Book launched in 1952, the third in a series of Air Force investigations aimed at scientifically studying UFOs and determining whether they were a threat to national security. Though the program was officially terminated in 1970, Project Blue Book files could previously be accessed in full only by visiting the National Archives in Washington, D.C. But now, thanks to a man named John Greenewald, who displays more than a million pages of government documents he’s obtained through Freedom of Information Act requests on his website

According to an interview with the

“It is a project that lasted for over 20 years, and they investigated thousands of cases. Sure, many of them they claimed were all explanatory, but you still have a few gems that remain a mystery,” Greenewald told Open Minds. “But further, you can use this data to compare and contrast to what it is today and start drawing conclusions or, rather, maybe pose new questions that investigators haven’t thought of yet.”