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

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

Engineers will review the data before setting the timeline for the second wet dress rehearsal.

Technicians swapped seals at the launch pad after hydrogen gas leaked from the rocket’s main fueling line earlier this month.

NASA is looking to launch the Artemis II moon mission as early as March 6 after a successful wet dress rehearsal at Kennedy Space Center.

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.

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

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.

NASA is looking to make sure the problems with leaks in its moon rocket have been remedied with another Artemis II test run ...

NASA's Artemis 2 moon mission is in trouble again after teams discovered a helium issue within the SLS rocket following successful wet dress rehearsal ...

NASA’s pre-launch preparations for the Artemis 2 mission are off to a rocky start, conjuring memories of the technical issues that delayed Artemis 1 by several months. A redo fueling test this week ...

The next series of launch opportunities for the Artemis II mission begin March 3. If the mission doesn’t lift off in March, NASA will need to roll the rocket back to the Vehicle Assembly Building to ...