Nearly 37 years after the space shuttle Challenger exploded, a television crew found a remnant of the shuttle during an underwater dive.

The artifact was discovered by a documentary television crew that was looking for World War II-era plane debris, NASA confirmed in a news release on Thursday. Divers spotted “a large humanmade object covered partially by sand on the seafloor,” and the team contacted NASA because the materials looked modern and the dive was close to Florida’s Space Coast.   

The crew was filming for an upcoming series that will air on the History Channel. They began diving near Florida’s coast in March. 

“The significance of this large section of Challenger’s structure was readily apparent,” Mike Barnette, who led the team that made the discovery, said in a news release from the History Channel. “We recognized the necessity of bringing this find to the immediate attention of NASA.”