Debris from the space shuttle Columbia, which burned up on re-entry in 2003, has turned up in a drought-stricken lake in eastern Texas.
The 1m-wide spherical tank was found in Lake Nacogdoches, near the Texas town of the same name where much of the debris initially fell.
The tank was part of the ill-fated orbiter’s electrical power system and contained liquid hydrogen or oxygen.
A drought in the region has driven the lake’s water levels down by nearly 3m.
A local policeman patrolling the area alerted authorities to the find.