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The Earth is upside down (and back again) in a “cosmic yo-yo” 84 million years ago

A new study has confirmed the old theory that the Earth’s crust tilted on its side about 84 million years ago. (Kredit gambar: Shutterstock)

The earth is not always upright. It turns out that the planet’s crust flipped sideways and back again about 84 million years ago, in a phenomenon researchers have dubbed the “cosmic yo-yo.”

The actual name for the core is true polar wander (TPW), which occurs when the planet’s outer layers or month It moves around its core, with the shell tilted relative to the object’s axis. Some researchers have previously speculated that TPW will occur Earth late from lime period, between 145 million and 66 million years ago, but that is hotly debated, according to A Statement by researcher.

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