Hubble Space Telescope: From a potential failure to one of NASA's most vital research tools

On April 24, 1990 the Hubble Space Telescope was launched and became one of NASA's most vital research tools but an early focusing issue almost spelled disaster for the mission. Video: Enda O'Dowd

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Looping: data feature

Data can add up to a frighteningly accurate picture of your daily life. And in the wrong hands, it can be weaponised. Illustration: Cathal O'Gara/iStock


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