||A mirror aboard the Space Shuttle Discovery is accidentally pointed away from the Earth instead of its intended target of Mauna Kea, Hawaii.
||23 Sep 1999
||NASA's $125 million Mars Climate Orbiter burns to a crisp when it enters the Martian atmosphere at an altitude of 37 miles instead of 186 kilometers.
||5 Dec 2003
||Because Tokyo Disneyland engineers recently switched to metric units, an improperly-sized Space Mountain ride vehicle axle suddenly snaps.