Astronaut Loral O’Hara conducts a spacewalk

iss070e015407 (Nov. 1, 2023) --- NASA astronaut and Expedition 70 Flight Engineer Loral O'Hara is pictured (center) tethered to the International Space Station's port truss structure during a spacewalk to replace one of the 12 trundle bearing assemblies on the port solar alpha rotary joint, which allows the arrays to track the Sun and generate electricity to power the station.