Documentary crew discovers debris from Space Shuttle Challenger 1986 launch

Explorers searching the Atlantic Ocean for lost World War II artifacts surprisingly uncovered a 20-foot-long piece of debris from the infamous 1986 explosion of the Space Shuttle Challenger.

The fortuitous discovery occurred off the east coast of Florida throughout the filming of a forthcoming series known as The Bermuda Triangle: Into Cursed Waters, CNN reports, per The History Channel and NASA.

The group of divers was attempting to find a World War II-era rescue aircraft that disappeared in December 1945, however was shocked to discover a piece of debris that appeared more modern, per CNN. They turned their discovery over to NASA in August, with the space agency only just lately confirming the debris had certainly originated from the failed Challenger launch.

“This discovery gives us an opportunity to pause once again, to uplift the legacies of the seven pioneers we lost, and to reflect on how this tragedy changed us,” NASA mentioned in a news release. “At NASA, the core value of safety is — and must forever remain — our top priority, especially as our missions explore more of the cosmos than ever before.”

The Challenger broke apart midair shortly after its launch on Jan. 28, 1985. All seven crew members, including a teacher poised to become the first civilian in space, had been killed in the incident. Scores of Americans witnessed the blast on a live tv broadcast of the launch.

The six-part The Bermuda Triangle: Into Cursed Waters series premieres at 10 p.m. ET on Nov. 22 on the History Channel.