Searching for the wreckage of a World War II plane, a film crew discovered historical artifacts with a more modern look. NASA has confirmed that the underwater debris found off the Florida coast is from the Challenger spacecraft crash that killed seven people.

Divers working on a documentary film on the seabed “a large man-made object partially covered with sand.” It featured a modern construction, including eight-inch square tiles commonly used in shuttle thermal protection systems. This led the crew to believe the debris might be related to NASA, and they contacted the space agency, which reviewed the images and confirmed its origin. NASA said it’s considering what additional action to take on the debris.

Space shuttle Challenger took off on January 28, 1986 and disintegrated just 73 seconds after flight. Six crew members and school teacher Krista McAuliffe died from the explosion or impact. The launch was broadcast live on US national television.