![]() Related: SpaceX Crew-7 astronauts will handle over 200 science experiments on ISS The warmed ammonia's heat releases into space via radiators, such as the leaky one aboard Nauka, allowing for the liquid's recirculation in the loop for a new round of cooling. Both these device types require circulating ammonia coolant, located in a closed-loop system on the outside of the space station. Waste heat is removed through cold plates (devices that cool electronics) and heat exchangers. (NASA and Roscosmos are both majority stakeholders in the ISS, alongside smaller space station partners.)Īmmonia is required to cool the ISS because the station's systems produce "waste heat," according to NASA documentation. segment of the space station "as a precaution against contamination," agency officials wrote. A Roscosmos spacewalk in April 2023 transferred the then-functional backup radiator to Nauka.įor now, NASA has asked its Expedition 70 ISS astronauts to close all shutters on the U.S. The leaky backup radiator was originally for a different Russian module aboard the space station, called Rassvet, and was delivered to the ISS via space shuttle mission STS-132 in 2010. "The temperature at the MLM is comfortable," Russian officials wrote on Telegram (translation provided by Google) and they also said there are no changes to operations, experiments or crew exercise periods. ![]() Russia's federal space agency, Roscosmos, confirmed the leak to NASA and also in a statement on Telegram. ![]()
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