NASA’s Exploration Systems Development office has completed its review of progress to date as well as forward path activity on the development of the Space Launch System (SLS) rocket to the NASA ...

NASA engineers have successfully test fired the first flight engine destined to power the agency's mammoth new SLS rocket that will launch American astronauts back to the moon and deep space for the ...

The meeting was held to discuss uncertainty about the SLS. Its first test flight with humans aboard has already been delayed once, and the schedule for the SLS’s tests are shaky — there is no ...

One of the biggest criticisms of NASA’s Space Launch System rocket and Orion spacecraft is that they will be too expensive to fly. Namely—while the large rocket and sizable capsule appear to be ...

One weld at a time, the flight hardware for NASA's mammoth new Space Launch System (SLS) booster has at last started taking shape, promising to turn years of planning and engineering discussions into ...

With a new presidential administration promising to review its human spaceflight activities, NASA on Thursday continued to signal a willingness to consider alternatives to its exploration systems—the ...

RS-25 Engine 2059 – a veteran of five Shuttle missions – is scheduled to begin static fire testing at the end of February, initiating a test series on the engines that will be tasked with launching ...