Video: Tower rollback prior to launch of Mars Pathfinder atop a Delta 2

United Launch Alliance’s final Delta 2 rocket is now on display at the Kennedy Space Center Visitor Complex in Florida, a monument to an industry workhorse that helped build the GPS navigation satellite fleet and enabled a new era of Mars exploration.

A Delta 2 rocket boosted by nine strap-on motors and two liquid-fueled stages will launch NOAA’s JPSS 1 weather satellite into a 511-mile-high (822-kilometer) orbit following liftoff from Vandenberg Air Force Base, California.

NASA twin GRAIL spacecraft are launched on September 10, 2011 aboard the most-powerful configuration of a Delta II rocket, the 7920H-10.