Elon Musk, founder and CEO of SpaceX, has advocated for a Mars-first strategy and has previously called planned missions to ...

On Friday, however, Boeing — the primary NASA contractor for the SLS rocket — signaled that changes are afoot. The company issued a warning about “the potential for approximately 400 fewer ...

(NASA) The first SLS rocket was expected to launch in 2016 ... with its prized Starship spacecraft exploding over the southwest Atlantic during a test flight. NASA had envisioned for the ...