NASA’s Space Launch System (SLS) Program is concluding its structural qualification test series with one upcoming final test that will push the design for the rocket’s liquid oxygen tank to its limits ...

Major construction is complete on NASA’s largest new Space Launch System structural test stand, and engineers are now installing equipment needed to test the rocket’s biggest fuel tank. The stand is ...

SLS still has helium leaks. Helium leaks have been a problem since the Space Shuttle days. It is so cold that it is hard to work with. The picture is of the ...

NASA says it can't try until March at the earliest to send a crewed spacecraft on a flight around the moon and back, due to hydrogen leaks during testing of the Artemis II rocket.

Teams will exit the hold, run through terminal countdown to ~T-33 seconds (simulated launch at 8:30–8:50 p.m. ET), then recycle the clock and practice the ...

Add Yahoo as a preferred source to see more of our stories on Google. With the giant SLS rocket on its Florida launch pad and the four astronauts of Artemis II preparing to make history as they fly ...