On this day — July 31

Minnesota, killing all eight people on board.

the presence of the British Army in Northern Ireland, and the longest-running British Army operation ever, comes to an end.

Raúl.

Lunar Prospector: NASA intentionally crashes the spacecraft into the Moon, thus ending its mission to detect frozen water on the Moon's surface.

injuring five.

Nepal killing all 113 people on board.

killing 108.

Atlantis is launched on STS-46 to deploy the European Retrievable Carrier and the Tethered Satellite System.

the first to reduce (with verification) both countries' stockpiles.

Alberta, killing 27 people.

Three members of a popular cabaret band and two gunmen are killed during a botched paramilitary attack in Northern Ireland.