Live coverage: International crew lands in Kazakhstan

Two astronauts floated outside the International Space Station early Tuesday and replaced one of the grapple fixtures on the end of the lab’s robot arm, the first of two excursions over the next week to complete a complex overhaul that began with a pair of spacewalks last October.

A Russian Soyuz ferry ship carrying a Russian commander and two NASA astronauts caught up with the International Space Station Friday and executed a flawless docking to close out a two-day rendezvous that began with launch Wednesday from the Baikonur Cosmodrome in Kazakhstan.

The International Space Station’s robotic arm, under the control of engineers on Earth, extracted an experimental inflatable habitat from the trunk of SpaceX’s Dragon supply ship Saturday and attached it to the orbiting complex.