Video: Two cargo freighters arrive at space station just days apart

The Russian Progress 64P autonomous cargo ship docks to the International Space Station on July 18 to deliver 5,300 pounds of fuel, water and supplies to the orbital complex. It was launched July 16 atop a Soyuz booster.

The commercial SpaceX Dragon CRS 9 vessel is captured by the International Space Station’s robotic arm and berthed to the outpost on July 20 to deliver 5,000 pounds of supplies and new external docking port. It was launched July 18 atop a Falcon 9 booster.