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Ten of the best Nasa Instagram photos
Speed Read Ten great images as Nasa blasts past one million followers
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Oculus: why has Facebook bought virtual gaming company for $2bn?
In Depth Tech community divided by Facebook's purchase of much-hyped virtual reality firm Oculus VR
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Cloak: new 'anti-social' app helps users avoid friends
Speed Read New smartphone app uses FourSquare and Instagram to help people steer clear of unwanted interactions
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