Atlas/Cygnus pre-launch news conference

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.

Wrapping up a two-day chase since launching from Virginia’s Eastern Shore, a commercial Cygnus cargo craft arrived at the International Space Station Monday with more than 7,200 pounds of supplies and experiments, the second freighter to reach the orbiting complex in 15 hours.

With his year in orbit at an end, Expedition 46 commander Scott Kelly hands command of the International Space Station to Expedition 47 commander Tim Kopra.