The final frontier
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How we discovered gravitational waves from ‘neutron stars’ – and why it’s such a big deal
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Watch: This video takes you on a stunning tour of the International Space Station
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Pluto may have a large ocean beneath its icy surface
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Emotion and tears in mission control as Rosetta came to a silent end
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Somewhere out there could be a giant new planet in our solar system: so where is it?
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How Hubble’s successor will give us a glimpse into the very first galaxies
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Record-breaking astronauts return to Earth – taking us one step closer to Mars
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Water, water, everywhere – where to drink in the solar system
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NASA mission brings Pluto into sharp focus – but it's still not a planet
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Who really benefits from the 'internet space race'?
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The first space walk happened 50 years ago, and nearly ended in disaster
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The Moon was a first step, Mars will test our capabilities, but Europa is the prize
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Giant sunspot returns – and it’s bigger and badder than ever
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Space music: Sights and sounds from the first-ever comet landing
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Explainer: why Rosetta space craft's mission to land on a comet such a big deal
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[Pictures] Five key moments in India's race to Mars
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What next for space tourism after SpaceShipTwo?
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One giant leap for preservation: protecting moon landing sites
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Three images in, India's Mars Orbiter Mission has become a better photographer
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This is the first image of Mars sent by the Indian orbiter
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India's Mars probe explodes in cyberspace, sparks scores of Twitter jokes
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With seven blockbusters in a row, has Salman Khan cracked a new Bollywood formula?