NASA's doing everything in its power to ensure the SLS doesn't fall even further behind schedule. Hot fire tests like this involve attaching the rocket to a test stand and running the engines to ...

NASA conducted a hot fire Saturday of the core stage for the agency’s Space Launch System (SLS) rocket that will launch the Artemis I mission to the Moon. The hot fire is the final test of the Green ...

BAY ST. LOUIS, Miss — NASA's final test of its Space Launch System (SLS) rocket to make sure it was ready to launch future Artemis Moon missions experienced early engine shutdown. The core stage ...

NASA tests RS-25 engine No. 20001 on Friday, at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, Mississippi. Test teams fired the engine for almost 500 seconds, the same ...

The hot-fire test of a chilled-down solid-fuel rocket motor for NASA’s planned heavy-lift Space Launch System (SLS) on June 28 moved the big human-rated rocket a step closer to its first flight in ...

RS-25 hot fire on Jan. 22. Credit: NASA HOUSTON—An RS-25 engine has passed a follow-up hot fire test, clearing it for installation on the NASA Artemis IV mission’s Space Launch System (SLS). The RS-25 ...