Sometime between now and July 3rd, NASA's newest Earth Orbiting Satellite (EOS), AURA, will be placed into orbit.
The Aura spacecraft won't be alone in space during its planned six-year mission.Once aloft, Aura will trail the Aqua spacecraft in a formation flight pattern to make comprehensive climate observations of the Earth. In 2005, the cloud-watching satellites - CloudSat and the CALYSPO - are expected to fill in the gap between the two EOS spacecraft, with the French-developed PARASOL satellite to join them in 2006.
Mission scientists have dubbed the five-spacecraft formation the "A-train," in which each spacecraft passes over a region 15 minutes after its predecessor and takes data that can ultimately be combined into a complete climate picture.