In a photo provided by NASA, the Orbital Sciences Corporation Antares rocket launches with the Cygnus spacecraft aboard, on Sunday from NASA's Wallops Flight Facility in Virginia.
NASA Administrator Charles Bolden speaks during a news conference in Berlin on Monday. Bolden said no single country was indispensable to the International Space Station's success.
From left: U.S. astronaut Steve Swanson, and Russian cosmonauts Alexander Skvortsov and Oleg Artemyev prior to the launch of their Soyuz-FG rocket Wednesday at the Baikonur Cosmodrome in Kazakhstan.
NASA astronaut Chris Cassidy performs a spacewalk in May to inspect and replace a pump controller box on the International Space Station. On Saturday, two astronauts will perform the first in a series of similar spacewalks to fix a broken cooling line on the ISS.