Ten big facts about Virgin Galactic
The world’s first commercial spaceline is soon to launch. Here’s what you need to know
Posted: 16 Apr 2014
The US administration regards ‘space' as technically beginning at an altitude of 80km (262,000ft). That's beyond the stratosphere (approx. 164,000ft), and into the Mesosphere. Beyond that lies the ionosphere, which runs to around 700km. The USAF and NASA reckon you're an astronaut if you've exceeded 264,000ft.