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First extrasolar planets discovered

First extrasolar planets discovered by Aleksander Wolszczan and Dale Frail - 21 April, 1992

21 April, 1992

On 21st April 1992, Astronomers Aleksander Wolszczan and Dale Frail announced the discoveries of first extrasolar planets known to man. The two planets are orbiting the pulsar PSR 1257+12.

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