Rolls-Royce and the U.S. Air Force validated the F130's ability to meet performance requirements for the B-52 missions, getting closer to flight testing. Engine maker Rolls-Royce announced on Feb. 24, ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA fired up RS-25 engine No. 20001 at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, Mississippi.

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

Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

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 ...