article_snippet.sent: Scroll down for video .
article_snippet.sent: Ticket cost: The starting price for flights is £150,000 ($250,000).
article_snippet.sent: Passengers are required to go through a 'Pre-Flight Experience Programme', including three days of pre-flight preparing onsite at the spaceport to ensure passengers are physically and mentally fit to fly.
article_snippet.sent: Once aboard: SpaceShipTwo will carry six passengers and two pilots.
article_snippet.sent: Each passenger gets the same seating position with two large windows - one to the side and one overhead.
article_snippet.sent: A climb to 50,000ft (15,000 metres) before the rocket engine ignites and SpaceShipTwo separates from its carrier aircraft, White Knight II.
article_snippet.sent: Passengers become 'astronauts' when Passengers reach the Karman line 62 miles (100km) up.
article_snippet.sent: ’ Celebrities among the 700 who have tickets include Ashton Kutcher (left) and Leonardo DiCaprio (right)