Video: Antares post-launch news conference

Russian investigators believe a malfunction during separation of the Soyuz rocket’s four liquid-fueled first stage boosters two minutes after liftoff from Kazakhstan led to an emergency landing of a two-man crew heading for the International Space Station, officials said Friday.

SpaceX test-fired a Falcon 9 rocket Saturday at Cape Canaveral, a critical test before liftoff Wednesday with several tons of cargo heading to the International Space Station.

Two more roll-out solar arrays will ride a SpaceX cargo ship to the International Space Station this weekend, continuing a years-long mid-life station upgrade as NASA plans procurement of a final set of new solar wings to fully reinforce the lab’s power supply.