--- description: There is the possibility that this was a false alarm, NASA said title: Fear of Ammonia Leak Leads to Partial Space Station Evacuation image: https://static.time.com/v3/assets/bltea6093859af6183b/bltbbdeb477a699b4b9/698779c006f2c15d6f3335fb/international-space-station.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 ---  * [Science](/section/science/) ## Science Update your preferences in [Account Settings](/account/preferences/) Close * [Space](/tag/space/) ## Space Update your preferences in [Account Settings](/account/preferences/) Close # Fear of Ammonia Leak Leads to Partial Space Station Evacuation by [NBC News](/author/nbc-news/) ## NBC News Update your preferences in [Account Settings](/account/preferences/) Close Updated: Dec 13, 2023 7:54 PM CUTPublished: Jan 14, 2015 12:55 PM CUT  The International Space Station. The International Space Station.NASA TV/EPA by [NBC News](/author/nbc-news/) ## NBC News Update your preferences in [Account Settings](/account/preferences/) Close Updated: Dec 13, 2023 7:54 PM CUTPublished: Jan 14, 2015 12:55 PM CUT The crew of the [International Space Station](http://www.nbcnews.com/watch/nbcnews-com/how-fast-big-and-costly-is-the-international-space-station-338661955697 "undefined") evacuated the U.S. section on Wednesday as a precautionary measure after Mission Control saw pressure changes that raised fears of a possible ammonia leak. All crew members were safe and had moved to the Russian side of the facility after controllers on the ground saw changes in water loop and cabin pressure that indicated the possibility of an ammonia leak, NASA said. No actual leak has been confirmed. Crew members put on emergency masks and moved to the Russian portion of the station. There is the possibility that this was a false alarm, NASA said… [Read the rest of the story from our partners at NBC News](http://www.nbcnews.com/news/world/ammonia-leak-u-s-section-s…tion-forces-evacuation-n285906?cid=par-time-article%5F20150114 "undefined") ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3666881/iss-space-evacuation-ammonia-leak/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3666881/iss-space-evacuation-ammonia-leak/"},"headline":"Fear of Ammonia Leak Leads to Partial Space Station Evacuation","datePublished":"2015-01-14T12:55:32.000Z","dateModified":"2023-12-13T19:54:56.000Z","description":"There is the possibility that this was a false alarm, NASA said","url":"https://time.com/3666881/iss-space-evacuation-ammonia-leak/","keywords":["Space"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltbbdeb477a699b4b9/698779c006f2c15d6f3335fb/international-space-station.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"NBC News","jobTitle":null,"url":"https://time.com/author/nbc-news/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltbbdeb477a699b4b9/698779c006f2c15d6f3335fb/international-space-station.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"The International Space Station.","caption":"The International Space Station.","creditText":"NASA TV/EPA","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/space/","name":"Space"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3666881/iss-space-evacuation-ammonia-leak/","name":"Fear of Ammonia Leak Leads to Partial Space Station Evacuation"}}]}] ```