NASA's second attempt to run a "wet test" of the Space Launch System (SLS) for its Artemis II mission was successful. Following a failure of some seals during the first attempt earlier this month, ...

Excess hydrogen concentration in a tail service mast umbilical interface had brought the countdown to an end during the first ...

NASA's Artemis 2 moon mission faces a new issue after a rocket test uncovered an issue with ground support equipment that ...

NASA is moving forward with preparations for the Artemis II mission, and the agency will soon provide live coverage of a ...

To fix the problem, NASA has to roll SLS and the stacked Orion spacecraft back to the Vehicle Assembly Building (VAB) at the ...

NASA completed a second wet dress rehearsal for the Artemis 2 mission on Feb. 19 without the hydrogen leaks seen in the first such test earlier this month.

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 is moving one step closer to its next crewed lunar mission as the agency prepares to conduct a wet dress rehearsal for Artemis II.

A NASA test to confirm repairs to seals in the SLS’s liquid hydrogen fueling system was only partially successful because of problems with ground equipment.

During the lead-up to NASA’s Artemis 1 mission back in 2022, recurring hydrogen leaks led to significant delays and a cancelled launch attempt. The agency had three years to address the underlying ...

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 ...