Q&A with Elon Musk, SpaceX’s founder and CEO

Astronauts Doug Hurley and Bob Behnken undocked from the International Space Station Saturday aboard a Crew Dragon capsule, heading for a parachute-assisted splashdown Sunday in the Gulf of Mexico to wrap up a 64-day test flight of SpaceX’s commercial human-rated spaceship.

Orbital ATK’s Antares rocket will deliver the commercial Cygnus supply ship to an orbit with an altitude between 117 miles (189 kilometers) and 184 miles (296 kilometers) within about nine minutes of liftoff Saturday from Virginia’s Eastern Shore.

Forecasters expect good weather on Florida’s Space Coast for liftoff of a Falcon 9 rocket early Tuesday with an Indonesian communications satellite.