Video: Liftoff of Delta 4 with WGS 7

NASA safety advisors on Thursday lauded hardware milestones on Boeing and SpaceX commercial crew capsules, but said multiple technical issues, including problems with parachutes, must be resolved before the human-rated ships are ready to carry astronauts, adding that both companies continue to pursue schedules that appear to be unachievable.

SpaceX is set to resume launches from pad 40 at Cape Canaveral in December with the liftoff of a space station-bound supply ship on top of a Falcon 9 booster, a major step in boosting the company’s flight rate and readying for the debut of the long-delayed Falcon Heavy rocket.

Look back on the launch Saturday of a Northrop Grumman Antares rocket from Wallops Island, Virginia, powered by a pair of kerosene-fueled RD-181 engines producing 864,000 pounds of thrust.