Live coverage: Space station crew back on Earth

With a robot rather than a cosmonaut in the commander’s seat, a Russian Soyuz spacecraft rocketed into orbit from Kazakhstan late Wednesday (U.S. time) en route to the International Space Station on a critical test flight before crews begin riding an upgraded Soyuz booster next year.

After criss-crossing Europe for a decade, the LISA Pathfinder satellite testbed has reached its last stop before launch in early December on a mission to demonstrate the delicate technologies required to detect elusive low-frequency gravitational waves rippling through the cosmos.

A Russian military communications satellite rode a Soyuz rocket and Fregat upper stage Thursday into an orbit stretching nearly 25,000 miles (40,000 kilometers) above Earth, successfully launching after a one-month delay to replace a suspect third stage on the Soyuz booster.