Don't look up: several asteroids are heading towards Earth – here's how we deal with threats in real life

By Monica Grady, Professor of Planetary and Space Sciences, The Open University

Don’t look now – but we are currently experiencing a rash of stories about a forthcoming global catastrophe. But in a change from reports of pandemics and climate change, this global catastrophe is produced by the impact of a giant asteroid. Or comet. Or both. This may feel extra ominous given the events in the recent Netflix film “Don’t Look Up”, in which the Earth is threatened by a “planet killer” asteroid.

But how worried should we really be – and what would happen if such a body actually hit us?

It…

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