NASA conducts second rocket fueling test that will decide when Artemis astronauts head to the moon
Phys.org
February 19, 2026
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NASA's second attempt to fuel its massive moon rocket came after initial efforts were halted due to hydrogen leaks during a dress rehearsal, delaying the Artemis mission—the first lunar trip by astronauts in over 50 years. The test was part of NASA's final preparations for the uncrewed Artemis I mission, which aims to send an Orion spacecraft around the moon later this year.
The initial fueling operation on March 18 was paused when a leak was detected in the rocket's plumbing system, specifically at a connector between the core stage and one of the strap-on boosters. This forced NASA to halt the test and investigate the issue before attempting the second try. Engineers worked to address the problem, making necessary adjustments to prevent similar issues during the retry.
The delay highlights the challenges of preparing for deep-space missions, where even minor technical issues can have significant consequences. The success of the fueling process is critical for ensuring the rocket's readiness for launch. A successful test would allow NASA to proceed with a static fire test later this month, which involves firing all 10 engines of the Space Launch System (SLS) rocket.
Despite the setback, NASA remains committed to its Artemis program, which aims to land humans on the moon by 2025. This mission is not only a milestone for the agency but also a stepping stone for future exploration of Mars and other destinations in space. The outcome of these tests will determine whether the uncrewed Artemis
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Originally published on Phys.org on 2/19/2026