Star.ppt
Buat yg butuh presentasi tentang bintang dalam basa inggris, ni kami sediakan filenya....
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A star is a huge, shining ball in space that produces
a tremendous amount of light.
How the star created?
A star is created by masses of hydrogen and helium atoms. Hydrogen and helium atoms are stardust. A cloud of hydrogen and helium atoms in space is called a nebula. Nebulae are the beginnings of stars. The first ever nebulae were created after the Big Bang, when the Universe originally came to be. New nebulae can be formed after stars die. Nebulae grow by attracting more hydrogen and helium atoms. They become hotter and denser this way.
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