Video: Change of command aboard International Space Station

As his year-long mission aboard the International Space Station draws to a close, Expedition 46 commander Scott Kelly of NASA gives a final in-flight news conference with U.S. media on Feb. 25.

Russia may start sending just two of its cosmonauts to the International Space Station at a time, according to media reports and comments by a NASA manager, in a cost-cutting measure that could reduce the size of the research lab’s crew to five.

In the final hours of a 340-day mission, Scott Kelly and Mikhail Kornienko said goodbye to their crewmates and closed the hatch to the International Space Station on Tuesday, heading for a parachute-assisted touchdown in Kazakhstan a few hours later.