Live coverage: Delta 2 launches

Meteorologists predict mostly sunny skies, mild temperatures and light winds Sunday for the launch of a SpaceX Falcon 9 rocket from California’s Central Coast with a $364 million oceanography satellite for U.S. and European science institutions.

Two NASA astronauts and an Italian flight engineer took shelter in the space station’s Russian segment Wednesday as mission control analyzed a possible leak of toxic ammonia coolant aboard the complex. Initial data indicated it was likely a false alarm.

The United Launch Alliance Atlas 5 rocket stands atop Space Launch Complex 3-East at Vandenberg Air Force Base in California on the eve of Wednesday’s NROL-79 satellite-deployment mission for the National Reconnaissance Office.