The two NASA satellites, to be launched on Friday morning from Vandenberg Air Force Base, Calif., aboard the same Boeing Delta II rocket, is to join three spacecraft already surveying the planet for a detailed study of the interlocking factors that affect Earth's climate. This constellation of satellites in a string 4,400 miles long will loop around the poles at an altitude of 438 miles measuring the interactions of the air, water and surface with the Sun's energy as they drive near-term weather and longer-term climate changes. The newest additions are the CloudSat, which will profile cloud formations with radar...