NASA's Space Launch System (SLS) has completed its critical design review – a major stepping stone on the way to becoming certified for manned spaceflight. Once complete, the SLS will be the most powerful launch vehicle ever constructed, capable of taking humans to hitherto unreachable destinations including a manned mission Mars.
NASA is another step closer to manned deep-space missions with the completion of the latest round of RS-25 rocket engine tests. Based on the engines that sent the Space Shuttle into orbit, the new power plants will form the core of the Space Launch System (SLS).
NASA's imaginatively-named Space Launch System (SLS), has entered its critical design
review phase, which will see the leviathan rocket given the go-ahead
for full-scale construction. The review represents a major milestone
that must be passed with flying colors if the SLS is to make its
intended maiden launch date, which is currently slated for 2017.