2002...
Feb 19th - NASA's 2001 Mars Odyssey space probe begins to map the surface of Mars using its thermal emission imaging system.
Mar 1st - The Envisat environmental satellite is launched, with its purpose being the recording of information on environmental change.
Jun 6th - An object with an estimated diameter of 10 meters collides with Earth over the Mediterranean and detonates in mid-air.
Jun 10th - The first direct electronic communication experiment between the nervous systems of two humans is carried out by Kevin Warwick in the U.K.
Sep 25th - The Vitim event, a possible bolide impact, occurs in Irkutsk Oblast, Russia.
Nov 25th - U.S. Pres.George W. Bush signs the Homeland Security Act into law, establishing the Department of Homeland Security, in the largest U.S. government reorganization since the creation of the Department of Defense in 1947.