On this day: July 31
POSTED: 08:36 PM PDT Jul 30, 2012
UPDATED: 11:00 PM PDT Jul 30, 2012
Mt. Fuji erupts, the Apollo 15 astronauts go for a ride and major-league baseball players end their strike, all on this day.
NASA
1999: NASA intentionally crashes the Lunar Prospector spacecraft into the Moon after the presence of water ice was successfully detected. It was hoped that the impact would liberate water vapor from the suspected ice deposits in the crater and that the plume would be detectable from Earth; however, no such plume was observed.
