ESA astronaut Sophie Adenot and NASA astronaut Anil Menon are conducting a joint spacewalk today to install a spare communications antenna [1, 2].
The mission is critical for the long-term stability of the International Space Station. By activating the spare Space-to-Ground antenna, the crew will restore full redundancy to the high-speed data and voice communications system that connects the station with Mission Control in Houston [1, 2].
This operation, designated as U.S. Spacewalk 98 [1], marks the second spacewalk for Adenot [1]. The pair exited the station to perform the installation and activation of the hardware. This redundancy ensures that if the primary communication link fails, the crew can maintain seamless contact with ground controllers, a vital safety requirement for orbital operations [1, 2].
Live coverage of the event began at 13:00 CEST [1]. The spacewalk itself was scheduled to start at approximately 14:35 CEST on Aug. 25, 2026 [1, 2].
The antenna system is the primary conduit for the massive amounts of scientific data generated on the station. Without full redundancy, a single hardware failure could potentially disrupt the flow of information or limit the ability of Houston to provide real-time guidance during emergencies [1, 2].
“The crew will restore full redundancy to the high-speed data and voice communications system.”
The restoration of communication redundancy minimizes the risk of a 'blackout' scenario where the ISS loses high-bandwidth connectivity with Earth. As the station ages, maintaining these legacy systems through manual spacewalks is essential to ensure the safety of the crew and the continuity of international research.
