Is our planet under threat from the depths of space? In this episode, we talk to solar physicist Dr Ryan French. Normally, Ryan is busy unravelling the mysteries of our Sun, but today we’ll be delving into a slightly darker topic – the many risks posed to our delicate planet from space. In his recent book, "Space Hazards: Asteroids, solar flares and cosmic threats”, Ryan covers all the many dangers our planet faces from space rocks, the Sun and the farthest reaches of the Universe. We run through some of the most pressing threats and find out just how worried we should be.

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