US astronauts have completed the first of three planned spacewalks from the shuttle Atlantis a day after the craft docked with the International Space Station.
Astronauts Garrett Reisman and Stephen Bowen finished the seven-hour, 25-minute spacewalk at 3:19 pm (local time) after installing a second space-to-ground communications antenna and a spare parts platform on Dexter, the two-armed robotic device on the orbiting ISS.
It was the 237th spacewalk by US astronauts, the second for Reisman and the fourth for Bowen, NASA said yesterday.
The pair meanwhile loosened battery bolts on the port-6 backbone segment of the station in preparation for the other spacewalks.
Atlantis brought to the station six new 170-kg batteries to be installed during the second and third spacewalks.
The shuttle and its crew of six successfully docked with the orbiting space lab on Sunday about 350 km above the South Pacific.