BY SPACEFLIGHT NOW Follow the preparations and launch of the Ariane 5 rocket carrying the European Space Agency's Envisat environmental research satellite. Reload this page for the very latest on the mission.				Flight data file Vehicle: Ariane 511 Payload: Envisat Launch date: Feb. 28, 2002 Launch window: 8:07:59 p.m. EST (0107:59 GMT March 1) Launch site: ELA-3, Kourou, French Guiana, South America Satellite broadcast: Telstar 5, Trans. 16, C-band