NASA study finds first SLS launch should be unmanned for safety
The cost of adding astronauts to a maiden voyage is prohibitive.
NASA pushes first launch of its Mars rocket to 2019
Not a surprise, but it gives SpaceX time to catch up.
Watch NASA's Mars rocket tests in 360-degree video
From the "flame trench," the SLS motor spews smoke, fire and steam.
NASA details preparations for SLS' and Orion's first flight
The agency has been subjecting both capsule and rocket to rigorous tests.
NASA's newest rocket booster is ready for deep space
The most powerful rocket in the agency's history is almost complete.
NASA successfully tests rocket engines designed for deep space
The original rocket engines may be old, but they're still powerful as heck.
NASA's first SLS launch will send cubesats into deep space
The satellites will pave the way for future missions to Mars and beyond.
NASA's Space Launch System inches even closer to flight
Dear NASA, need volunteers for the first ride? Where do we sign up?
NASA preps Orion heat shield for its first flight aboard the SLS
The space agency had to redesign its top layer to be tougher for the sake of the capsule's future missions.