The Explorers' Club, № MCXLV

Operation AXIOM: The Space Age—The 40th Anniversary of S.T.S.-51-L, Aftermath
7 March 1986: The Challenger crew compartment was located; remains of six of the seven crew were recovered, with the remains of the seventh recovered a month later; the cause of death could not be determined, but analysis indicated the compartment had remained intact until impact with the ocean; ships involved in the recovery included the U.S.S. Preserver & the Deep Sumergence Vessel NR-1.

Commentary: Major debris from the Challenger has been discovered as recently as November 2022.

Bonus! Space Age Song o' the Day: Challenger Recovery
Gordon Lightfoot, "The Wreck of the Edmund Fitzgerald" from Summertime Dream (Space Cadet Mike Papa Whiskey)

Requiescat in pace.