![\"Spacewalkers](\"https:\/\/blogs.nasa.gov\/spacestation\/wp-content\/uploads\/sites\/240\/2021\/12\/blog_iss066e082988-1.jpg\")
<\/a>NASA Television coverage of today\u2019s spacewalk with NASA astronauts\u00a0Thomas Marshburn<\/a>\u00a0and\u00a0Kayla Barron<\/a> is now underway and is also available on the NASA app<\/a> and the agency\u2019s website<\/a>.<\/p>\n The crew members of Expedition 66 are preparing to go outside the International Space Station<\/a> for a spacewalk expected to begin at approximately 7:10 a.m. EST and last about six and a half hours.<\/p>\n The crew is in their spacesuits in the airlock in preparation to exit the space station and begin today\u2019s activities that will focus on replacing a faulty antenna system. NASA Flight Engineers\u00a0Raja Chari<\/a>\u00a0and\u00a0Mark Vande Hei<\/a> are assisting Marshburn and Barron in preparations before they exit the station.<\/p>\n Marshburn and Barron will work at the Port 1 (P1) truss structure, where the antenna is mounted. The antenna recently lost its ability to send signals to Earth via NASA\u2019s Tracking and Data Relay Satellite System. Although its degradation has had limited impact on station operations, mission managers decided to install a new antenna to ensure communications redundancy. The space station has additional low-rate S-band systems, as well as the high-rate KU-band communications system that relays video.<\/p>\n Leading the mission control team today is Flight Director Vincent LaCourt with support from Art Thomason as the lead spacewalk officer and NASA astronaut Drew Morgan acting as the capsule communicator, or CAPCOM, to the crew.<\/p>\n Learn more about station activities by following the\u00a0space station blog<\/a>,\u00a0@space_station<\/a>\u00a0and\u00a0@ISS_Research<\/a>\u00a0on Twitter, as well as the\u00a0ISS Facebook<\/a>\u00a0and\u00a0ISS Instagram<\/a>\u00a0accounts.<\/p>\n Get weekly video highlights at:\u00a0http:\/\/jscfeatures.jsc.nasa.gov\/videoupdate\/<\/a><\/p>\n Get the latest from NASA delivered every week. Subscribe here:\u00a0www.nasa.gov\/subscribe<\/a><\/p>\n Get The Details…<\/a><\/p>\n Mark Garcia <\/p>\n Powered by WPeMatico<\/a><\/small><\/p>\n","protected":false},"excerpt":{"rendered":" NASA Television coverage of today\u2019s spacewalk with NASA astronauts\u00a0Thomas Marshburn\u00a0and\u00a0Kayla Barron is now underway and is also available on the NASA app and the agency\u2019s website. The crew members of Expedition 66 are preparing to go outside the International Space Station for a spacewalk expected to begin at approximately 7:10 a.m. EST and last about \u2026 Continue reading
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