SpaceGizmodoabout 2 hours ago
Russia Closes ISS Air Leak Tunnel
3 min read
Russia's space agency prepares to permanently seal the PrK transfer tunnel on the International Space Station after years of failed repair attempts. The leak rate peaked at 3.7 pounds a day in April 2025 before a temporary fix failed. This decision isolates the Russian Zvezda module from the rest of the station, ending decades of joint operations.
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