NASA has called off plans for a spacewalk outside the International Space Station this week due a medical issue with one of the astronauts due to join the excursion, agency officials said Monday (Aug. 23).
A "minor medical issue" involving NASA astronaut Mark Vande Hei is the reason for the spacewalk's postponement, the U.S. space agency wrote in an update (opens in new tab). Vande Hei and crewmate Akihiko Hoshide of the Japan Aerospace Exploration Agency (JAXA) were scheduled to venture outside the station on Tuesday (Aug. 24) to prepare the orbiting lab for a new solar array.
"This issue is not a medical emergency," NASA officials wrote in the update. "The spacewalk is not time-sensitive and crew members are continuing to move forward with other station work and activities."
NASA teams are now working to determine when to reschedule the spacewalk amid a busy time for the space station. A SpaceX Cargo Dragon spacecraft is currently set to launch the CRS-23 resupply mission to the station for NASA on Saturday (Aug. 28). Russia, meanwhile, is planning to send cosmonauts out on a series of spacewalks beginning next week to complete installation work on the station's newest Russian module, called Nauka, which docked at the station earlier this month.
During the planned spacewalk, Vandei Hei and Hoshide were to install a modification kit on the port side of the space station's backbone-like main truss. The kit will allow the installation of a new type of solar wing, called the International Space Station Roll-Out Solar Array, to beef up the station's power grid. The new array will be the third of six new solar wings to upgrade the station's power system.
That solar array prep work, along with other tasks, will now have to wait until a new spacewalk time is determined, NASA officials said.
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