Plane flying along equator

How fast I would have to travel if I were 10 miles above the earth’s surface?
If you are in a plane at a 10 miles above the ground, you would have to travel 24,963 miles around the equator toward the West in 24 hours. That’s more than 1,040 miles per hour!
If you fly around North Pole toward the West, that’s will be nearly 24 (twenty-four) miles per hour – that’s why your clock has 24 hours.


How old is our Earth?
Planet Earth is roughly a third of the age of the Universe that making Earth about 4.5 billion years old.


Ice melting

If all the ice on the Earth melted, the sea would rise by 100 metres.


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