Virgin Galactic's CEO says his company is aiming to take passengers beyond 62 miles (100 kilometers) in altitude, but they'll be counted as space travelers if they just rise above the 50-mile mark. <\/p>\n
That 12-mile span highlights differences in definitions of the outer-space boundary, as well as questions about the initial capabilities of Virgin Galactic's SpaceShipTwo rocket plane. The spacecraft is expected to go through a series of flight tests over the coming months, setting the stage for commercial passenger operations. <\/p>\n
Does going up a mere 50 miles count as spaceflight? That question was raised in a series of reports over the past week that took a close look at Virgin Galactic's policy. <\/p>\n
100 kilometers vs. 50 miles <\/p>\n
According to the International Aeronautical Federation, a flight goes astronautical when it crosses the 100-kilometer line, also known as the Karman Line. That was also the definition of space used for the $10 million Ansari X Prize a decade ago, and Virgin Galactic has referred to the 100-kilometer definition numerous times since then. <\/p>\n
However, the U.S. military has historically awarded astronaut wings to pilots who rose above 50 miles (80 kilometers) during the 1960s. NASA followed that definition for its X-15 test pilots although three of those pilots didn't get their astronaut wings until 2005, 40 years after they flew. (One of them, Bill Dana, died last week at the age of 83.) <\/p>\n
It's the 50-mile definition, rather than the 100-kilometer definition, that's written into the formal agreements for Virgin Galactic's customers. \"Fifty miles has been in there from the start,\" George T. Whitesides, Virgin Galactic's chief executive officer, told NBC News on Friday. <\/p>\n
More than 700 customers have paid as much as $250,000 for the space experience which would give them several minutes of weightlessness, a view of the curving Earth beneath the black sky of space, and a roller-coaster re-entry that involves as much as 6 G's of acceleration. That experience would be much the same at 50 miles as at 62 miles, though with somewhat less time spent in zero-G. <\/p>\n
Step-by-step approach <\/p>\n
Whitesides said Virgin Galactic is targeting the 100-kilometer altitude and beyond, but added that \"we have to prove that out in our test program.\" <\/p>\n
<\/p>\n
View post: <\/p>\n
To Space or Not to Space? Virgin Galactic Addresses the Question<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Virgin Galactic's CEO says his company is aiming to take passengers beyond 62 miles (100 kilometers) in altitude, but they'll be counted as space travelers if they just rise above the 50-mile mark. Continue reading