Russia’s Nauka module sprung a leak on Monday in the latest incident of faulty hardware on board the International Space Station . Flight controllers at NASA’s mission control noticed Nauka’s backup radiator, which is mounted to the outside of the module, was leaking coolant at approximately 1:00 p.m. ET on October 9, the space agency wrote in a blog post.
The main radiator, which is used to cool the module, is still working normally. This marks the third coolant leak incident traced back to Russian hardware in low Earth orbit. In December 2022, ground teams observed a fountain of particles pouring out from a Soyuz spacecraft docked to the ISS.
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