SpaceShipOne is a reusable suborbital spacecraft developed in secret with an estimated $20 million of finance, by Burt Rutan and unveiled at a recent ceremony in the Mojave Desert, California.

The aim of SpaceShipOne, which is carried aloft by the White Knight aircraft for the first part of its journey, is to win the $10 million X-prize which will be awarded to the first craft that can carry three people to an altitude of 100 km twice in a two-week period.

According to a report on the X Prize web site, SpaceShipOne flew attached to the underside of the fuselage of the White Knight aircraft during a test flight over the Mojave Desert on 19 May.

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