Categories: Live BroadcastsSpace Station

Watch Live: Emergency ISS Spacewalk to Fix Coolant Leak

The International Space Station (ISS) has grown tremendously in size and complexity and evolved significantly over 15 years of continuous human occupation from Nov. 2, 2000 to Nov. 2, 2015. Credit: NASA

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Astronauts on the International Space Station doing an unplanned “emergency” spacewalk to fix an ammonia coolant leak outside the station. On Thursday, the ISS crew spotted small white flakes floating away from an area of the Station’s P6 truss structure, and noticed pressure drops in the control panel of the pump and flow control system for the power-supplying solar arrays. The ammonia coolant is vital to keeping the power control systems working and needs to be fixed. At this point the crew is not in any danger, but the leak does need to be fixed soon.

You can watch live in the window above. As of this writing, NASA astronauts Tom Marshburn and Chris Cassidy are just getting ready to head out the airlock, and plans call for them to spend more than six hours outside the station to find and hopefully repair the ammonia coolant leak.

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Read our previous article here to find out more information about the leak.

This is the 168th spacewalk for maintenance and construction of the ISS.

Nancy Atkinson

Nancy has been with Universe Today since 2004, and has published over 6,000 articles on space exploration, astronomy, science and technology. She is the author of two books: "Eight Years to the Moon: the History of the Apollo Missions," (2019) which shares the stories of 60 engineers and scientists who worked behind the scenes to make landing on the Moon possible; and "Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos" (2016) tells the stories of those who work on NASA's robotic missions to explore the Solar System and beyond. Follow Nancy on Twitter at https://twitter.com/Nancy_A and and Instagram at and https://www.instagram.com/nancyatkinson_ut/