Wednesday, April 21, 2010

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Search for aliens! I think that aliens do exist because there's been many encounters with creatures that seem to be "aliens" all over the world.I think that when we find one, everybody whoevermsaid they didn't exist will be proven wrong.

Pluto! It is considered a dwarf planet because of it's size. Pluto is at the edge of the solar system. It takes about five and a half hours for light from the sun to reach pluto but it only takes eight minutes to reach Earth. It is so cold on pluto that the nitrogen and oxygen there freeze into a solid form.

Andromeda Galaxy! It is our closest spiral galaxy. Andromeda Galaxy and the Milky way are predicted to merge within the next five billion years. A unexpected possibility is that the sun could switch galaxies and become bound to the Andromeda Galaxy.

Black Holes! Black holes are cold remnains of former stars so dense that nothing including light can escape because of the extreme gravitational pull. Black holes are the last evolutionary stage in the lifetime of stars that had once been more than ten times the size of our sun.

Red Giants! Red giants are big balls of gas. The middle core of a red giant is heavy, strong, and full of helium. When it first forms, it is at its hottest temperature. When it becomes a red giant it has already been through the stages of red, white, and yellow. When a supergiant is at its greatest size it can fit over 500 billion Plutos, 300 billion Earths or 100 billion
Jupiters in it.

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