On Pad 17A at Cape Canaveral Air Station cables lift the Delta II rocket into position for launch.

On Pad 17A at Cape Canaveral Air Station, cables lift the Delta II rocket into position for launch. Scheduled for launch on Dec. 10, 1998, the rocket is carrying the Mars Climate Orbiter. The orbiter is heading for Mars where it will primarily support its companion Mars Polar Lander spacecraft, which is planned for launch on Jan. 3, 1999. The orbiter's instruments will monitor the Martian atmosphere and image the planet's surface on a daily basis for one Martian year (1.8 Earth years). It will observe the appearance and movement of atmospheric dust and water vapor, as well as characterize seasonal changes on the surface. The detailed images of the surface features will provide important clues to the planet's early climate history and give scientists more information about possible liquid water reserves beneath the surface