Q&A with Mark Sirangelo, leader of Sierra Nevada Space Systems

A video camera aboard Russian Progress cargo ship reveals craft is spinning dramatically in orbit as it passes in range of ground station communications.

NASA is gearing up for an intense few weeks of work aboard the International Space Station, staging three spacewalks, moving a docking port from one module to another to support commercial crew ferry ships and capturing an Orbital ATK Cygnus cargo ship carrying nearly 4 tons of equipment and supplies.

A Russian refueling and resupply freighter docked with the International Space Station on Saturday after a two-day pursuit with maneuvering propellants, food and provisions for the research lab’s crew.