| 1985 |
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. |