The First National Bird in The World

The First National Bird in The World:-       On July 4, 1776, the Second Continental Congress of the United States issued the declaration of independence and decided that the new United States must have a special national emblem. On June 20, 1782, the Congress of the United States passed a resolution to regard the unique white headed sea sculpture of North America as the national bird of the United States, and take this bird...

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The milky way is a Spiral Galaxy

The milky way is a Spiral Galaxy - After 75 years of research, radio, infrared and even x-ray telescopes have confirmed their existence, and found that the spiral cloud extends 100000 light-years (the diameter of the disk), with a thickness of 1000 light-years (the thickness of the disk). On this gorgeous disk, our tiny solar system lies on the inner edge of an arm, about 25000 light-years from the center.          ...

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Mobile phone high quality wallpaper

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