Live coverage: SpaceX resupply mission arrives at space station

Concern about a possible ammonia coolant leak Wednesday prompted astronauts on the International Space Station to evacuate the U.S. segment of the complex and shelter in the Russian portion of the outpost while flight controllers scrambled to untangle initially confusing telemetry.

United Launch Alliance has released views from cameras mounted aboard the company’s most recent Atlas 5 rocket launch showing the rocket’s blastoff from Cape Canaveral at dawn Aug. 8 with a U.S. Air Force communications satellite.

A little more than a year after the Falcon Heavy rocket’s first test flight, SpaceX teams on Florida’s Space Coast are readying the world’s most powerful operational launcher for its second mission Thursday with a commercial communications satellite.