Space travel a step closer says Sir Richard

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What a feeling to be in Mojave with all the team to witness @virgingalactic go faster than the speed of sound http://t.co/tQ7zhlJbbJ

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Virgin Galactic at speed of sound

Sir Richard Branson has tweeted that his Virgin Galactic space plane has broken the speed of sound for the first time. The British billionaire who lives in Oxfordshire describes it as a 'momentous day' for space travel.