CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building high bay 4 at NASA's Kennedy Space Center in Florida, a worker begins adhering the final Ares I-X logo on one of the Ares I-X upper stage simulator segments. The decal identifies the Ares I-X as a development test flight, which is targeted to launch in 2009. Ares I is the essential core of a safe, reliable, cost-effective space transportation system that eventually will carry crewed missions back to the moon, on to Mars and out into the solar system. Ares I may also use its 25-ton payload capacity to deliver resources and supplies to the International Space Station, or to "park" payloads in orbit for retrieval by other spacecraft bound for the moon or other destinations. Photo credit: NASA/Jim Grossmann KSC-08pd3815