2014 Event NASA successfully tests its unmanned Orion spaceship for potential human flight over 3,500 miles from Earth; several years and more tests will be needed before the vessel is ready for human travel, potentially paving the way for manned trips to Mars 1997 Event President Clinton trips and tears up his knee requiring surgery 1984 Event Mary Decker trips on heel of Zola Budd during 3,000m Olympic run
