RT @Space_Station: For the first time, two U.S. commercial cargo crafts (@SpaceX & @OrbitalATK) are docked to station at the same time. https://t.co/Omh0czEWo9
RT @Space_Station: For the first time, two U.S. commercial cargo crafts (@SpaceX & @OrbitalATK) are docked to station at the same time. https://t.co/Omh0czEWo9