Live coverage of the countdown and launch of an Antares rocket from Virginia with Northrop Grumman’s 10th operational Cygnus resupply flight to the International Space Station. Text updates will appear automatically below. Follow us on Twitter.
Related Articles

Photos: Starliner makes first appearance on launch pad
This gallery of photos shows the rollout Tuesday of United Launch Alliance’s Atlas 5 rocket and Boeing’s Starliner crew capsule to pad 41 at Cape Canaveral, plus additional views of the 172-foot-tall launcher standing next to the crew access tower Wednesday as teams prepared for a countdown rehearsal.

NASA buys up to five more seats on future Soyuz missions
NASA has purchased two seats on Russian Soyuz capsules launching later this year and in early 2018 to expand the crew on the U.S. segment of the International Space Station from three to four, and reserved options to fly astronauts on Soyuz spacecraft in 2019 if commercial rides are not available in time.

Antares rocket boosts Cygnus supply ship toward International Space Station
A commercial Cygnus cargo freighter packed with 3.8 tons of medical and pharmaceutical experiments, technology demonstration hardware, CubeSats and crew provisions rode an Antares rocket into orbit from Virginia’s Eastern Shore on Wednesday afternoon on the first leg of a day-and-a-half journey to the International Space Station.