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Exoplanets – 30 years of discovery
The fundamentals of astronomy for beginners
On 9 January 1992, astronomers Aleksander Wolszczan and Dale Frail introduced the world to the first two planets to be found outside the Solar System, alien worlds observed orbiting the pulsar PSR B1257+12, around 2,300 lightyears away. The hunt for ‘exoplanets’ – as they are also known – was then, as now, heavily driven by our quest to find out just how unique (or not) our Solar System
