Video: Change of command aboard International Space Station

For the second time in less than 24 hours, a robotic resupply freighter departed Earth Friday for the International Space Station, this time aboard a Russian Soyuz booster launched from the Baikonur Cosmodrome in Kazakhstan.

A NASA instrument built to help astronomers learn about the structure and behavior of neutron stars, super-dense stellar skeletons left behind by massive explosions, has been mounted to an observation post outside the International Space Station after delivery aboard a SpaceX supply ship earlier this month.

SpaceX’s first upgraded Cargo Dragon spaceship departed the International Space Station Tuesday morning with more than 4,400 pounds of research specimens and other equipment, heading for splashdown Wednesday night in the Gulf of Mexico off the west coast of Florida.