Essay People

1517 Words Oct 3rd, 2014 7 Pages
Ghhhhhhhhhhhhhhhhhj, In the beginning it was dark and cold. There was no sun, no light, no earth, no solar system. There was nothing, just the empty void of space. Then slowly, about 4.5 billion years ago, a swirling nebula, - a huge cloud of gas and dust was formed. Eventually this cloud contracted and grew into a central molten mass that became our sun. At first the sun was a molten glow. As the core pressure increased, and the temperature rose to millions of degrees - a star was born. Through the process of thermonuclear hydrogen fusion, the sun began to shine.
This was the nebular hypothesis, first proposed in 1755 by the great German philosopher, Immanuel Kant.

THE SUN - (c 4 Billion BC)
Our sun is an atomic furnace that turns
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As rocks and other particles collided forming the Earth, it became molten. The rocks liquefied and the heavier elements sank to the core of the planet. The surface of the Earth cooled and hardened. Gradually oceans appeared and sunlight and water gave birth to life, eventually, intelligent life.
The earth has a diameter of 7,900 miles (compared to the sun's diameter of 864,000 miles).

EARLY LIFE - (c 3 Billion BC)
Without light, there would be no life. Life was dependent on three things being present: a.) the basic long molecule building block, carbon, b.) water, and c.) light. The Earth had all three. Eventually the oceans formed a rich organic soup that ultimately bore life. The oldest verified evidence of life comes from Rhodesia, where rocks formed approximately 3 billion years ago, bear 'stromatolites', the fossilized remains of algae.
Originally our atmosphere contained; hydrogen, helium, nitrogen, methane, ammonia and water vapor. For millions of years, the waste product of oxygen, from the ocean's algae, bubbled up out of the sea and into the atmosphere. Gaseous oxygen reacted strongly with the methane and ammonia in the atmosphere, turning it into carbon dioxide and water vapor. Over time, methane, ammonia and carbon dioxide were almost eliminated from the atmosphere. As oxygen began to build up in the atmosphere, the usual oxygen module (0-2) began to absorb ultraviolet wavelengths from

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