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NASA Fixes Fuel Leak Issues Ahead of Moon Mission

Kennedy Space Center, USASunday, February 15, 2026

NASA is diligently working to resolve fuel leaks on its Space Launch System (SLS), crucial for the Artemis missions.

The Problem

  • Hydrogen leaks during fueling have been a persistent issue.
  • A practice countdown in February was halted due to the leak.

Root Cause & Fixes

  • The leak was traced to connection lines between the rocket and the launch pad.
  • Two liquid hydrogen supply tubes were identified as the culprits.
  • New seals were installed after a recent test.
  • A partial fueling test was conducted to check the seals, but it ended early due to a clogged filter.

Safety Adjustments

  • The hydrogen gas safety limit near the rocket was increased from 4% to 16%.
  • Data showed the rocket could handle higher concentrations without ignition risks.
  • Hydrogen is light and prone to escaping, making containment challenging.

Future Plans

  • NASA will redo the fueling system for Artemis III.
  • The new design aims to prevent leaks and enhance safety before the next launch.

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