* our Earth is orbiting the Sun at more than 107,000 km/hr; but we feel as if we are standing still..!
* to reach the center of our Earth, we will have to dig down 6,378 kms..!
* about 22 kilometers above the Earth is a layer of OZONE (a form of oxygen) that shelters humans and other forms of life from the Sun's most harmful ultraviolet rays.
* if you ever held a compass, you know that something causes the needle to point north. That "something" is the magnetic field that surrounds the Earth.
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