--- description: Two U.S. astronauts completed their third spacewalk on Sunday, to install antenna cables on the ISS for future commercial flights. title: ISS Astronauts Do Third Spacewalk in Eight Days image: https://static.time.com/v3/assets/bltea6093859af6183b/blte046592b8b74ecda/6987819d06f2c19e753343a8/iss-spacewalk-nasa.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 # ISS Astronauts Do Their Third Spacewalk in Eight Days by [Helen Regan](/author/helen-regan/) ## Helen Regan Update your preferences in [Account Settings](/account/preferences/) Close Mar 2, 2015 7:47 AM CUT  In this image from NASA television astronaut Terry Virts is seen during the third spacewalk outside the International Space Station March 1, 2015. In this image from NASA television astronaut Terry Virts is seen during the third spacewalk outside the International Space Station March 1, 2015.NASA-TV/AP by [Helen Regan](/author/helen-regan/) ## Helen Regan Update your preferences in [Account Settings](/account/preferences/) Close Mar 2, 2015 7:47 AM CUT Two U.S. astronauts left the International Space Station on Sunday for a [spacewalk](http://www.reuters.com/article/2015/03/01/us-space-spacewalk-idUSKBN0LX1E420150301 "undefined") — the third time they had left the orbiting station in just over a week. This time, station commander Barry “Butch” Wilmore and flight engineer Terry Virts were preparing berthing docks for space taxis being developed by Boeing and SpaceX, reports Reuters. Their job was to rig more than 122 meters of cables for two sets of antennas that the new vehicles will use as navigation tools before they dock at the station. The mission was completed after just 5.5 hours, less than the seven hours originally planned on. After the spacewalk, Virts found a small amount of water inside his helmet but said it didn’t pose a risk to his safety. \[[Reuters](http://www.reuters.com/article/2015/03/01/us-space-spacewalk-idUSKBN0LX1E420150301 "undefined")\] ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3727883/astronauts-iss-spacewalk-terry-virts-barry-wilmore/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3727883/astronauts-iss-spacewalk-terry-virts-barry-wilmore/"},"headline":"ISS Astronauts Do Their Third Spacewalk in Eight Days","datePublished":"2015-03-02T07:47:26.000Z","dateModified":"2026-02-22T04:49:27.903Z","description":"They were helping to set up antenna that future space taxis will use to dock with the ISS","url":"https://time.com/3727883/astronauts-iss-spacewalk-terry-virts-barry-wilmore/","keywords":["Space","Water","astronauts","international space station"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blte046592b8b74ecda/6987819d06f2c19e753343a8/iss-spacewalk-nasa.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Helen Regan","jobTitle":null,"url":"https://time.com/author/helen-regan/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blte046592b8b74ecda/6987819d06f2c19e753343a8/iss-spacewalk-nasa.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Space Station Spacewalk","caption":"In this image from NASA television astronaut Terry Virts is seen during the third spacewalk outside the International Space Station March 1, 2015.","creditText":"NASA-TV/AP","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/3727883/astronauts-iss-spacewalk-terry-virts-barry-wilmore/","name":"ISS Astronauts Do Their Third Spacewalk in Eight Days"}}]},{"@context":"https://schema.org","@type":"VideoObject","name":"Astronauts Talk to Time About Life Aboard The International Space Station","description":"Astronauts Talk About Life Aboard The International Space Station","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/TNgMmJJR/poster.jpg?width=720","uploadDate":"2014-07-09T19:03:44.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/TNgMmJJR.m3u8","embedUrl":"https://time.com/3727883/astronauts-iss-spacewalk-terry-virts-barry-wilmore/","duration":"PT9M38S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/3727883/astronauts-iss-spacewalk-terry-virts-barry-wilmore/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}}] ```