Live coverage: International Space Station crew lands in Kazakhstan

Darting through low clouds, the US Air Force’s reusable X-37B spaceplane rode a United Launch Alliance Atlas 5 rocket into orbit Sunday, debuting upgrades to accommodate additional scientific experiments, a dishwasher-sized tech demo satellite, and classified military objectives.

Northrop Grumman called off the launch of an Antares rocket and a Cygnus space station cargo freighter Thursday night on Virginia’s Eastern Shore, the third aborted countdown in less than 24 hours for three different U.S. rockets.

A novel communications experiment developed by NASA and the Naval Research Laboratory has arrived at the International Space Station to prove data can be transmitted in space using X-ray signals, a breakthrough that could have uses in deep space exploration and military technology on Earth.