The four Aerojet Rocketdyne RS-25 rocket engines that power the core stage of NASA’s Space Launch System (SLS) fired in unison for the second time on March 18 in Test 8 of the Core Stage Green Run ...

Following a test readiness review on Monday, NASA is now targeting Saturday, Jan. 16, for the final test in the Green Run testing series for the core stage of the Space Launch System (SLS) rocket that ...

The new-and-improved RS-25 engine blasted its way through the hot-fire test, which ended sooner than expected. Reading time 2 minutes The crewed Artemis 5 mission to the Moon won’t happen until 2028 ...

NASA performs an RS-25 rocket engine hot fire test on Jan. 17. Credit: NASA Test personnel at NASA’s Stennis Space Center have successfully conducted the fourth in a second round of 12 ground test ...

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 ...

Weirdly enough, the most powerful space rocket NASA has ever designed is powered by engines born more than four decades ago: the Space Launch System (SLS) rocket, the backbone of the Artemis Moon ...

NASA engineers have hot-fired the redesigned Artemis moon rocket in preparation for future Space Launch System (SLS) flights that will take humanity back to the moon and beyond. The test of the RS-25 ...

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 ...