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Scientists have discovered a whole new solar system which they are describing as "perfect". They say it's been unchanged since it formed 12 billion years ago The researchers say they hope to use the system to study the formation of planets. Amy Tuson from the University of Cambridge is one of the scientists involved - she's been speaking to Newshour's Rebecca Kesby. (picture: artist impression of "perfect" solar system - credit NCCR PlanetS/PA)