Live coverage: Soyuz crew lands in Kazakhstan

SpaceX launched a Falcon 9 rocket from Vandenberg Space Force Base, California, with 51 small satellites, hosted payloads, and orbital transfer vehicles heading into polar orbit on the Transporter 7 mission. Liftoff occurred at 11:48 p.m. PDT Friday (2:48 a.m. EDT; 0648 UTC Saturday).

Northrop Grumman’s launch team aborted an Antares rocket launch from Virginia’s Eastern Shore minutes before liftoff Sunday evening. The rocket is set to loft a Cygnus cargo freighter toward the International Space Station with nearly four tons of supplies and experiments.

NASA hopes to begin launching astronauts to the space station aboard Boeing and SpaceX capsules in the 2017 timeframe, but managers expect to still send crews up aboard Russian spacecraft as a hedge against problems that could force some astronauts to make an emergency landing.