Video: Antares rocket returns to flight with new engines

Check out imagery from Friday’s liftoff of a previously-flown Falcon 9 rocket booster with the BulgariaSat 1 communications satellite from Florida’s Space Coast.

After unusual concentrations of hydrogen around the rocket foiled a launch attempt Dec. 19, United Launch Alliance said Friday that the company’s powerful Delta 4-Heavy launcher and a U.S. government spy satellite will remain grounded in California until at least Jan. 6 as engineers troubleshoot a small fuel leak.

Top officials from NASA and Roscosmos, the Russian space agency, could decide soon to commit to keeping the International Space Station staffed and flying through at least 2028, four years after the research lab’s current retirement date.