Did an alien spacecraft crash-land in Russia?

Andy Bruno joins Rob Attar to explore the debates that still surround the mysterious Tunguska event

A vintage-looking photograph on a scrapbook page shows a bright, comet-like object streaking across a star-filled night sky above an orange-lit forest reflected in water

Published: September 1, 2026 at 11:58 AM

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In 1908, in the remote forests of Siberia, there was a giant explosion and bright lights were seen in the sky. Was this an asteroid or a comet crashing to earth? Or could it have been an alien spacecraft – or even a human experiment gone horribly wrong?

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In this episode of History's Greatest Conspiracy Theories, environmental historian Andy Bruno joins Rob Attar to explore the debates that still surround the mysterious Tunguska event.

Authors

Rob AttarHead of content and editor of HistoryExtra magazine

Rob Attar is head of content and editor of HistoryExtra magazine

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