British billionaire Richard Branson on Monday opened the world's first-ever commercial spaceport in the New Mexico desert, the new home for his company, Virgin Galactic.

The eccentric businessman, with usual flair, sported a black jacket and waves of hair flying as he inaugurated the building by breaking a champagne bottle against a hanger building, while rappelling down the side of it.

"Spaceport America," as the site is called, will serve "as the operating hub for Virgin Galactic and is expected to house up to two WhiteKnightTwos and five SpaceShipTwos, in addition to all of Virgins astronaut preparation facilities and mission control," said the company in a statement to the press.

About 150 people already booked for travel on the first flights to orbit attended the event, said the company.

Also attending were head of Virgin Galactic George Whitesides, commercial director Stephen Attenborough, and famed US astronaut -- and second human being to step on the moon -- Buzz Aldrin.

Branson last month said he hoped to launch a vessel into space within the next 12 months, which he said would kick off an era of commercial space travel.

"The mother ship is finished... The rocket tests are going extremely well, and so I think that we're now on track for a launch within 12 months of today," he told CNN's Piers Morgan in September.

"About an hour between Los Angeles and London is not completely out of the question," Branson said, adding that it will likely take many years before the company can offer such a service.

In the meantime, Virgin has sold some 430 tickets for space travel -- at $200,000 a pop -- for an estimated $86 million.

A number of private companies are rushing to fill the gap left by NASA, which ended its 30-year shuttle program in July with the completion of the final Atlantis mission to the International Space Station (ISS).