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  • Let’s play somewhat if”, shall we?

  • Our planet rotates around its axis from west to east at a speed of over a thousand miles

  • per hour at the equator!

  • And this pattern has lasted for billions of years since the Earth was formed.

  • Butwhat ifone day, our planet suddenly started to rotate backward, from east to west?

  • So hey, let’s put a “different spinon it, shall we?

  • Ha ha

  • It would be one thing if the Earth's continents and oceans were situated symmetrically against

  • the equator when the change of the direction happened.

  • In this case, the only change people would notice would be the climate, which would turn

  • into a mirror image of the current one.

  • In other words, there’d be no dramatic changes.

  • But since life on our planet is rarely about symmetry, the effects of the Earth rotating

  • backward would be way more complicated.

  • But keep in mind that everything will depend on how our planet would change the direction

  • of its rotation.

  • For example, let's imagine that it happened suddenly!

  • Like, one day, the planet was calmly rotating from west to east, and then, in the blink

  • of an eye, it's already moving backward, from east to west.

  • Remember, in the very beginning, I told you about the speed of the Earth's rotation?

  • So, in the case of an abrupt switch of the direction, an instant change in speed would

  • make about 2,000 miles per hour!

  • Well hold onto something!

  • That means that everything not fixed to the ground would be hurled eastward.

  • Buildings and other man-made structures would collapse, sending tons of debris into the

  • air and creating chaos.

  • The sudden change in direction would move all the water on the planet, which, in turn,

  • would create vast tsunamis.

  • They’d move across the planet, destroying everything in their path and literally changing

  • the whole structure of the Earth.

  • Oh, and don't forget about hurricane-force winds, which would essentially wipe out everything

  • still standing after the massive waves.

  • In short, the Earth would turn into a gloomy, muddy mess.

  • But let's not dwell on this highly unlikely scenario and, instead, picture how different

  • our planet would be if it rotated from east to west right from the beginning.

  • in this case, you would see the Moon and the Sun rise in the west and set in the east.

  • But that would be the smallest of all the differences.

  • The thing is that the different spinning direction of the planet would create unexpected weather

  • conditions on all the continents, and the Earth itself would be a totally different

  • place!

  • Some regions of the world would be colder than they are now.

  • For example, western Europe would be plagued by severe, freezing winters every year.

  • And, vice versa, Russia would warm up and lose the title of one of the coldest countries

  • in the world.

  • Some areas of the world would become much greener than they are as we know them.

  • Other regions, on the contrary, would turn into deserts.

  • For example, North America would be nothing more than a dry dust bowl.

  • In South America, the Amazon rainforests would get replaced by arid sand dunes.

  • But the area from the Middle East to Central Africa, on the other hand, would be covered

  • with lush, dense forests.

  • And the rest of the deserts would be either covered with grass or scattered trees.

  • Do you think such dramatic changes have already happened sometime during the history of our

  • planet? Write about your opinion in the comment section below!

  • Anyway, the east-to-west rotation would also influence ocean currents.

  • Few people know that nowadays, the climate on our planet is greatly influenced by AMOC

  • - it's an ocean current that transports heat all over the world.

  • On the forward-spinning Earth, this current is in the Atlantic Ocean.

  • But should the planet start to rotate backward, AMOC would move to the Pacific.

  • It’d be a bit stronger than the original current, and it’d bring more heat to eastern

  • Russia.

  • In general, there would be much more greenery on our planet, and, therefore, more oxygen

  • for everyone to breathe.

  • On the other hand, that might not turn out to be such a great thing.

  • Now, the ocean is swarming with phytoplankton bacteria.

  • But on that different Earth, instead of plankton, cyanobacteria would dominate.

  • These billion-year-old bacteria were some of the first inhabitants of our planet.

  • But the problem with them is that they pump out huge amounts of oxygen.

  • Now if they replaced all other kinds of bacteria, they would completely transform the Earth's

  • atmosphere.

  • Thus, it would contain so much oxygen that people would simply be unable to breathe and,

  • therefore, it would be hard for them to exist on the planet!

  • That's why the chances are high that on a backward-spinning Earth, people would be replaced

  • with a completely different species.

  • But even if it did happen, we wouldn't know about that, would we?

  • In any case, it's almost impossible to imagine the conditions that could make our planet

  • begin spinning backward!

  • So, I guess this is just one of those hypothetical questions like, "What if the Earth's core

  • cooled down?"

  • But wait, indeed, what would happen then?

  • We’d have quite a cool core of course

  • Now s omewhere incredibly deep beneath the surface of our planet lies the Earth's core

  • - a ball of scorching-hot iron which is surrounded by boiling liquid metal.

  • The temperature of the Earth's core is more than twice as high as the temperature on the

  • surface of the Sun!

  • And so far, it seems to work well for all of us.

  • But could the planet function if its core turned into a frozen rock?

  • One of the things that makes life on the Earth possible is the geomagnetic field.

  • It's like a powerful superhero that protects us from all the harmful stuff attacking our

  • planet from space, including highly charged particles from the sun and cosmic radiation.

  • What's more, thanks to this geomagnetic shield, solar winds can't strip away the Earth's atmosphere.

  • You may ask, "What does the geomagnetic field have to do with the red-hot core of the planet?"

  • The thing is that this very field is created by the Earth's core!

  • You don't notice it, but when the planet spins, the speed of its solid inner core, and the

  • speed of its liquid outer core are different.

  • As a result, the speed difference creates electric currents, which, in turn, generate

  • the geomagnetic field.

  • Now, let's imagine that both parts of the Earth's core cooled down for some inexplicable

  • reason.

  • In this case, the worst would happen - our planet would simply lose its magnetic field!

  • Uh-oh, but if there’s no magnetic field, there's also no atmosphere!

  • That's why some time later, the Earth would start to resemble Mars a little bit too much

  • for my liking.

  • First, you wouldn't be able to breathe without an oxygen mask and a pressure suit.

  • Rocks, gas, water, and everything else wouldn’t be heated by the boiling core anymore.

  • The Earth would grow colder and colder.

  • There would be no earthquakes; volcanoes would stop spewing lava, and the continents wouldn't

  • be drifting apart bit by bit as they do now.

  • Unfortunately, people wouldn't be around to feel happy about the geological stability.

  • The eternal cold and lack of oxygen would either finish us, or prevent us from living

  • normal lives.

  • And then, there would be the massive problem of protecting the planet from space radiation,

  • remember?

  • It's not very clear what exactly would happen to the planet if it lost the electromagnetic

  • field, but it wouldn’t be anything good.

  • The Earth would probably see a radioactive wave onslaught, which would overheat it to

  • a degree (to a degree) at which it would become uninhabitable.

  • Or it would suffer from solar wind attacks, which would sweep away the oceans, seas, lakes,

  • and rivers.

  • But whichever guess is correct, the Earth would turn into a lifeless, cold rock in any

  • case.

  • Whew!

  • Kinda shakes you right down to the core, huh?

  • Well, the only thing I can say at this point is, Let’s take care of this earth, the only

  • home we have in the universe, andlet’s keep spinning, let’s keep spinning”….

  • Hey, if you learned something new today, then give the video a like and share it with a

  • friend!

  • And here are some other videos I think you'll enjoy.

  • Just click to the left or right, and stay on the Bright Side of life!

Let’s play somewhat if”, shall we?

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地球が逆回転し始めたらどうなる? (What Would Happen If Earth Started to Spin Backwards)

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    林宜悉 に公開 2021 年 01 月 14 日
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