What if the Earth spun backwards?
Our planet, and all the other planets, are spinning in space. But what would happen if the world stopped turning, or even started going backwards?
Your whole life is governed by spin. The rotation of our planet tells you when to wake up, and Earth’s orbit around the Sun is the reason why some of us dig out a jumper for half the year and a t-shirt for the rest. But what if that all changed?
That’s exactly what 8-year-old Geronimo in Ecuador wants to know. He and his dad, Fabian, have got themselves dizzy trying to figure out what would happen if the Earth stopped spinning, or better yet, started spinning in the opposite direction. Would everyone fly off into space? Would school be at night? Eager for answers, they decided to ask CrowdScience.
Presenter Anand Jagatia embarks on an interstellar journey, blasting off with the celestial origins of spin itself. Astronomer Amy Bonsor from the University of Cambridge in the UK explains how Earth’s rotation began, with collapsing clouds of gas, planetary pile-ups and crushing gravitational force.
At Keele Observatory, things get apocalyptic. Anand meets astronomer Jacco van Loon, who explains what would happen if Geronimo somehow waved a magic wand and brought Earth’s rotation to a halt. With months of unbroken daylight or darkness, devastating storms and even the loss of the Earth’s magnetic shield, it’s like the script of a disaster movie.
Wave that magic wand again and we imagine a world where the Earth not only stops... but starts spinning the other way. Meteorologist Joao Basso from the University of Leipzig in Germany walks us through a mind-bending 2018 study that tells us the surprising things that would happen to the global climate.
Presenter: Anand Jagatia
Producer: Harrison Lewis
Series Producer: Ben Motley
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- Fri 18 Jul 2025 19:32GMTÃÛÑ¿´«Ã½ World Service
- Fri 18 Jul 2025 22:32GMTÃÛÑ¿´«Ã½ World Service Europe and the Middle East
- Mon 21 Jul 2025 01:32GMTÃÛÑ¿´«Ã½ World Service except Americas and the Caribbean
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CrowdScience
Answering your questions about life, Earth and the universe