Does alien life exist?

In 1939, Winston Churchill wrote an article explaining his belief in alien life. Some of his ideas now seem prophetic. The vastness of the universe means that, mathematically, we are probably not alone. But others remain sceptical. Our knowledge of distant galaxies is still minimal. And if aliens existed, wouldn’t we know about them by now? What do you think? Discuss this week’s You Decide with the rest of your class and make your vote!

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