Experienced NASA astronauts Bob Behnken and Chris Cassidy have each completed their tenth extravehicular activity (EVA) from the International Space Station (ISS), matching a record held by just two others.
Bob Behnken, who arrived at the ISS on May 31, and Expedition 63 Commander Chris Cassidy conducted their tenth spacewalk—and fourth together—on Tuesday, July 21. This ties the record for the most U.S. EVAs, originally set by Michael Lopez-Alegria in 2007 and matched by Peggy Whitson in 2017.
The 5-hour, 29-minute spacewalk was packed with critical work. The duo installed a new tool kit at the base of the station's Canadarm2 robotic arm and documented prior battery upgrades to the ISS electrical system.
They also removed two devices for manipulating solar panels, repositioned a portable footrest, and cleared a camera lens filter. Finally, they moved toward the Tranquility module to prepare for the station's first commercial airlock, slated for delivery by a SpaceX cargo ship later this year.
Post-EVA, Behnken's total spacewalk time stands at 61 hours and 10 minutes, while Cassidy's is 54 hours and 51 minutes.
NASA highlighted that this EVA marked the 300th U.S. spacewalk since Ed White's historic Gemini 4 excursion in 1965 and the 231st in support of ISS assembly and maintenance.
Behnken and Doug Hurley, who flew to the ISS on SpaceX's inaugural crewed Demo-2 mission, are scheduled to depart on August 1, splashing down in the Atlantic off Florida the following day. This paves the way for SpaceX's Crew-1 mission from Kennedy Space Center on August 30.
