Moon mission delayed again as NASA faces fresh Artemis II technical trouble
Times of India
by TOI SCIENCE DESKFebruary 22, 2026
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NASA's Artemis II moon mission has been delayed again due to a technical issue involving the Space Launch System rocket at Kennedy Space Center in Florida. Engineers detected an interruption in the flow of helium to the interim cryogenic propulsion stage late last week, which forced them to halt operations and review data. Helium is crucial for maintaining environmental conditions in the upper-stage engine and pressurizing its propellant tanks. The agency is now considering a possible rollback of the rocket and spacecraft to the Vehicle Assembly Building (VAB) while teams assess the fault.
The issue arose during a wet dress rehearsal earlier this month, where systems initially functioned as expected, but subsequent operations revealed problems with helium flow. Engineers are investigating potential causes, including the interface between ground and rocket lines, a valve within the upper stage, and a filter positioned between ground equipment and the rocket. Data from Artemis I is also being analyzed for insights into similar helium-related challenges before its launch.
A rollback to the VAB would likely rule out a March launch, as NASA aims to preserve an April window depending on repair timelines. Teams are preparing to remove pad access platforms, which cannot be safely dismantled in high winds. The rocket remains in a safe configuration at Complex 39B, with engineers working to determine whether repairs can be made at the pad or inside the assembly building.
This delay highlights the complexities of large-scale space missions and underscores NASA's commitment to thorough testing and safety protocols. While frustrating for the agency and its partners, the focus on resolving technical issues ensures a more reliable mission moving forward. The outcome of this troubleshooting will not only impact Artemis II but also set precedents for future lunar exploration efforts.
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Originally published on Times of India on 2/22/2026