NASA's Constellation Program continues work on the development of the Orion spacecraft that will return humans to the moon and prepare for future voyages to Mars and other destinations in our solar system.

NASA's Constellation Program continues work on the development of the Orion spacecraft that will return humans to the moon and prepare for future voyages to Mars and other destinations in our solar system. This 2007 artist's rendering represents a concept of the Orion spacecraft approaching the International Space Station in Earth-orbit -- Picture by Lightroom Photos / NASA