What If the Earth Collided With Another Planet?

Last time a stray planetoid the size of Mars smashed into Earth, it scattered our planet's young crust into space, where gravity glued those particles into what we now call the Moon. This time, it would be all hellfire and brimstone with no survivors left. And here's a timeline of how things break down... Transcript and sources: https://insh.world/science/what-if-th... Watch more what-if scenarios: Planet Earth: https://www.youtube.com/watch?v=_-HhC... The Cosmos: https://www.youtube.com/watch?v=gfuJy... Technology: https://www.youtube.com/watch?v=CS3bB... Your Body: https://www.youtube.com/watch?v=QmXR4... Humanity: https://www.youtube.com/watch?v=fdCDQ... Follow what-if on Instagram for bonus material: https://www.instagram.com/what.if.show/ Suggest an episode: http://bit.ly/suggest-whatif T-shirts and merch: http://bit.ly/whatifshop Facebook Watch: https://www.facebook.com/What.If.science Watch on Tubi: http://bit.ly/what-if-tubi "Imagination will often carry us to worlds that never were. But without it, we go nowhere." — Carl Sagan If you enjoy What If, make sure to check out our other channel "Underknown": https://www.youtube.com/c/interesting... Produced by Underknown in Toronto, What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.

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