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The Mystery of Water on Earth: How Did It Arrive and Why Does It Surround Us?

Today, Earth is more than 70% covered in water, but 4 billion years ago it was an extremely hot planet. One of the most widely accepted theories is that ice-covered asteroids brought much of this water to Earth.
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Today, Earth is more than 70% covered in water, but 4 billion years ago it was an extremely hot planet. One of the most widely accepted theories is that ice-covered asteroids brought much of this water to Earth.

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Azteca Baja California broke the news in on Sunday, March 15, 2026.
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