WASHINGTON — NASA’s Space Launch System heavy-lift rocket may not be ready for its first launch until November 2018, nearly a year later than previously scheduled, based on the assessment of a major ...

NASA new mega-rocket, a towering booster designed for deep space missions, will be ready for its first test flight no later than November 2018, space agency officials announced Wednesday (Aug. 27). It ...

When NASA announced the completion of the Space Launch System's critical design review Oct. 22, it also released an updated illustration of the rocket, with the core stage now orange instead of white.

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 ...

KENNEDY SPACE CENTER, Fla. – SpaceX CEO Elon Musk set low expectations for Tuesday’s debut launch of the new Falcon Heavy rocket from Kennedy Space Center. Musk said he would consider the test flight ...

NASA's deep-space rocket, known as the Space Launch System (SLS) is ready for lift-off by 2018, at least according to an agency review of the system. The review, which is thorough and looks at ...

The RS-25 test team conducted their first hot-fire test of the year in the A-1 test stand at the Stennis Space Center in Mississippi. The Tuesday afternoon test continued development work started with ...

NASA says the design for its heavy-lift Space Launch System has gotten further along than any comparable development project in three decades, but the schedule for turning the design into a rocket for ...