SpaceX Launches Rocket, Its First Since Explosion on Launchpad

A Falcon 9 rocket roared into the sky on Saturday carrying 10 communications satellites – a return by SpaceX and its billionaire leader, Elon Musk, to the business of launching satellites to orbit. But financial details disclosed this past week about the company overshadowed the successful liftoff, raising questions about the viability of Mr. Musk’s long-range plans for SpaceX and his vision of sending people to Mars.