Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

An Atlas 5 rocket successfully launched another Cygnus cargo freighter for Orbital ATK Tuesday night, fulfilling the booster’s role of reestablishing America’s resupply link to the International Space Station.

Track the major milestones of Monday’s launch of a Falcon 9 rocket from Cape Canaveral with a Dragon cargo craft heading for the International Space Station.

A three-man crew departed the International Space Station on Sunday, concluding more than five months aboard the orbiting research complex and heading for landing in Kazakhstan. Undocking of the Soyuz MS-07 spacecraft occurred at 0916 GMT (5:16 a.m. EDT), and the trio landed on the Kazakh steppe at 1239 GMT (8:39 a.m. EDT).