Earth is the third planet in eight planets of Solar system. It is the fifth largest and densest planet as well. It is also called as Blue planet, due to the presence of water on this planet. It is only planet which has life on it. Earth has only one natural satellite, called as moon. Here are some interesting facts about planet earth.
1. Age of Earth
In the scheme of this universe Earth is almost five billion years old. However, life appeared on the planet quite late i.e. 200 million years ago.
2. Shape of Earth
Shape of earth is not round, rather it is geoid. It means, it is rounded but has slight bulge towards the equator. Rotation of earth causes this bulge.
3. Brightest planet
Earth is the brightest planet in the solar system, if we look from the distance. Moon reflects its light from the water of earth, which makes it brighter.
4. Geologically active planet
Earth is the only planet, which is geologically active. Earthquakes and volcanoes keep it geologically active.
5. Temperature of Earth
Unlike its surface, center of earth is molten. Its temperature is nearly7, 000 C, while average temperature on the surface of earth is 13 C.