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Let us know some such things about the earth that you should know, how our earth is visible from space. 

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Earth is the only planet in the Solar System from where you can see a rainbow, with 71% of its surface covered by water and 29% by land. 

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Suppose if a tunnel is dug on the earth, it will take 42 minutes for a heavy object to come out from the other side. 

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The Earth is not perfectly round, its diameter at the equator is up to 45 kilometers greater than the diameter at the poles. 

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It looks like a blue star when viewed from a distance of 6 billion kilometers from Earth. Water is the reason due to which the earth appears blue from the sky. 

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Do you know that the Earth's core is made up of 85-88 iron and about 47% oxygen is present on its crust. 

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The thickest of the Earth's four layers is the metallic layer, which is 2900 km thick, and the thinnest layer is the Earth's crust, which is 

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at a depth of 30 km from the Earth's surface. The temperature of the Earth's inner core is between 5400 to 6000 °C, the only example of which is 

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the magma released from the Earth's inner core through volcanoes. Earth is made up of four layers, the inner core, outer core, mantle and crust. Earth is the only 

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planet with an atmosphere of 21% oxygen and liquid water on its surface. Earth's atmosphere contains an ozone layer that protects it from the sun's harmful UV rays.