Find 3 interesting facts about our planet

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The Earth is the densest planet in our solar system, with a mean density of 5.52 grams per cubic centimeter. This density is primarily due to the large iron-nickel core at the center of the planet.

The Earth is the only known planet to have liquid water on its surface, which is essential for the existence of life. Approximately 71% of the Earth's surface is covered in water, with the majority of it contained in the oceans.

The Earth is not a perfect sphere, but rather an oblate spheroid. This means that its shape is slightly flattened at the poles and bulging at the equator due to the planet's rotation. The diameter of the Earth at the equator is about 43 kilometers larger than the diameter measured from pole to pole.