Live coverage: Japanese cargo craft arrives at space station

Four astronauts strapped into their SpaceX Crew Dragon capsule, undocked from the International Space Station and plunged to a fiery pre-dawn splashdown in the Gulf of Mexico Sunday, closing out the first operational flight of SpaceX’s futuristic touch-screen ferry ship.

U.S. spacewalk 94 was slated to have NASA astronauts Mike Fincke and Zena Cardman perform a variety of operations around the orbiting outpost during the roughly 6.5-hour-long event. A new date for the spacewalk hasn’t been announced.

United Launch Alliance teams at Cape Canaveral launched an Atlas 5 rocket at 6:13 a.m. EDT (1013 GMT) Thursday with the U.S. Air Force’s fifth Advanced Extremely High Frequency communications satellite. The AEHF 5 satellite will join a network of geostationary relay stations providing secure, jam-resistant video, voice and data links for the U.S. military.