Astronauts took a spacewalk Friday, gearing up the International Space Station for future commercial crew missions.
The astronauts are preparing an adapter for a second special docking collar — what's basically a parking spot for visiting spacecraft. It updates the ports the space shuttle used to dock with the station. The first one was installed last year.
This is the first of three spacewalks. The second spacewalk, scheduled for April 2, will move the adapter to a new location on the ISS.