In response to a query from Ars about the engine test anomalies, Rocket Lab Chief Executive Officer Pete Beck downplayed concerns.

The Space Launch System rocket's RS-25 engine was fired up for the “final round of certification testing ahead of production of an updated set of the engines," according to NASA. The test occurred at ...

NASA's Artemis II wet dress rehearsal was halted due to a fuel line leak during preparations for a historic human flight ...