Saturday, April 5, 2014
The Earth : Where is your really Home!
The Earth is the fifth largest planet in the Solar System, with a diameter of 12,756 km and a circumference of 40,024 km at the Equator.
Central Sun
Polish scientist Nicolaus Copernicus realized in the 1500s that the Universe must work with the Sun at the center of the Universe and that all the planets in the Solar System moved around it.
Amazing
Because the Earth rotates and is more flexible than you might think, it bulges in the middle like a pumpkin. The bulge was lessening for centuries, but now, suddenly. it is growing again because of accelerated melting of the glaciers.
Life planet
Earth is the only planet we know of that con support life because of a remarkable set of Conditions The Sun is o Stable star with a constant temperature Earth temperature is high enough for liquid water to occur, and for oxygen-producing organisms to thrive in the liquid oceans, but not so hot that all the water vapour evaporates (as in the case of Venus). The presence of the Moon helps to preserve liquid water. Large gas giants in the Solar System help to draw a lot of earthbound asteroids away from our planet.
Viewed from Space, the Earth, which is mainly Covered by oceans appears mostly blue. Cloud formations swirl above the familiar shapes of the continent. The Earns is protected from the Suns radiation by a magnetic field that stretches 60,000 km out into Space
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