Video: Antares post-launch news conference

Seven astronauts and cosmonauts are gearing up for launches April 9 and April 22 to the International Space Station, replacing seven outgoing crew members set to land in Kazakhstan and off the coast of Florida on April 17 and April 28.

Take a look back at the Dec. 22 liftoff of a SpaceX Falcon 9 rocket from Vandenberg Air Force Base in California, a launch that was visible across Southern California and as far away as Arizona as the booster climbed into sunlight at dusk to deliver 10 commercial communications satellites to orbit.

Three veteran space fliers rode a Soyuz rocket into orbit Wednesday from the Baikonur Cosmodrome in Kazakhstan, heading to the International Space Station for a five-month stay.