(DAILY MAIL) — An astronomer who has spent three decades hunting for the source of a transmission which is believed by many to be proof of alien life says it may have come from an interstellar ‘lighthouse’.

Since 1982, Robert Gray has been on a quest to solve the puzzle of the ‘Wow! signal’, an enigmatic blip in the read out of a radio telescope – the like of which has never been seen again since.

Mr Gray, who has just published a book about his attempt to rediscover the signal said he believes it could have come from an alien ‘lighthouse’.

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