NASA NASA's Space Launch System Design 'Right on Track' for Journey to Mars

For the first time in almost 40 years, a NASA human-rated rocket has completed all steps needed to clear a critical design review (CDR). The agency’s Space Launch System (SLS) is the first vehicle designed to meet the challenges of the journey to Mars and the first exploration class rocket since the Saturn V. via NASA http://www.nasa.gov/exploration/systems/sls/artist-concept-of-the-sls-block-1-configuration.html