Virgin Galactic on Thursday completed what was expected to be its final test flight before taking paying customers on brief trips to space.
Six of the company's employees, including two pilots, landed at Spaceport America in southern New Mexico after the short up-and-down flight that included a few minutes of weightlessness.
It took about an hour for the mother ship to carry the spaceplane to an altitude where it could fire its rocket and make the final push to the edge of space.
“Successful boost, WE HAVE REACHED SPACE!” Virgin Galactic tweeted.
The flight came nearly two years after founder Sir Richard Branson beat fellow billionaire and Amazon founder Jeff Bezos and his rocket company Blue Origin into space.
Mr Bezos ended up flying nine days later from west Texas and Blue Origin has since launched several passenger trips. Federal aviation authorities banned Virgin Galactic launches after Sir Richard's flight to investigate a mishap.
Virgin Galactic has been working for more than a decade to send paying passengers on short space hops and in 2021 won the federal government's approval.
The initial commercial flight expected later this year will include members of the Italian Air Force who will conduct experiments.
Next will come customers who purchased tickets years ago for their chance at weightlessness aboard a winged spacecraft that launches from the belly of a plane.
About 800 tickets have been sold over the past decade, with the initial batch going for $200,000 each.
Tickets now cost $450,000 per person.
Virgin Galactic has reached space five times since 2018 and will be aiming for 400 flights per year from Spaceport America once it finishes building its next class of rocket-powered planes at a site in neighbouring Arizona.
After Sir Richard's trip, the Federal Aviation Administration grounded flights as it investigated a problem that caused the rocket ship to veer off course during its descent back to its runway in the New Mexico desert.
Virgin Galactic insisted at the time that no one was ever in any danger.
The company made changes to its carrier aircraft and the spaceplane. The delay was nearly twice as long as expected, partly due to supply chain issues and labour shortages.
