Approximately 4.5 billion years ago, a Mars-sized planet named Theia collided with the young Earth at speeds exceeding 15 km per second, vaporizing Theia and blasting billions of tons of molten rock into space; over thousands of years, gravity pulled this debris ring together to form the Moon, a theory confirmed by Apollo astronauts who brought back lunar rocks with chemical signatures matching Earth's crust.
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๐๐๐๐ฉ ๐๐ฉ๐๐๐ ๐๐ก๐ ๐๐๐ฒ ๐ญ๐ก๐ ๐๐จ๐จ๐ง ๐ฐ๐๐ฌ ๐๐จ๐ซ๐ง ๐ฅ๐Ajoutรฉ :
4.5 billion years ago, our solar system was a chaotic and violent place. [music] Earth was just a young lava world orbiting the sun without a companion.
Then, [music] a Mars-sized planet named Theia crossed its path. Theia slammed into Earth at incredible speeds, traveling over 15 km or 9 mi per second.
This catastrophic [music] impact vaporized Theia and blasted billions of tons of molten rock into [music] space.
Over thousands of years, gravity pulled this massive ring of glowing debris together, >> [music] >> forging the moon we see today.
Scientists know this because Apollo astronauts brought back lunar rocks, and [music] their chemical signatures perfectly match the crust of our own planet. The giant impact hypothesis proves that every time you look up at the night sky, you're looking at a broken piece of ancient [music] Earth.
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