This booster features a new design that NASA would use to power SLS rockets beginning with the ninth mission, or Artemis IX. The motor tested on Thursday isn't flight-worthy.

A new version of the solid rocket booster being developed for the Space Launch System experienced an anomaly during a test firing in Utah June 26.

Space & Spaceflight NASA’s Next-Gen Rocket Booster Explodes in Test of a Design That May Never Fly A video of the static fire test showed a large plume of exhaust burning through part of the ...

Northrop Grumman saw some fiery drama during a test of a more powerful version of the solid rocket booster that would be used if NASA’s Artemis program ever gets to its ninth launch using the ...

A solid rocket engine for NASA's Space Launch System rocket experienced an anomaly during a static fire test at the booster's Northrop Grumman facilities June 26.