Makeup+of+a+Star

=__MAKEUP OF STARS__ =
 * Stars are made of the same stuff as the rest of the Universe: 73% hydrogen, 25% helium, and the last 2%.
 * Many of the objects you can see in the night sky are stars, large objects in space that produce light. Stars are so far away that their light does not reach us for years. As light from so far away passes through our atmosphere, it is moved around so that the star seems to twinkle.
 * The more the Universe expanded and cooled down, stars started to be born. The first stars that were born were huge! these first stars created some of the heavier elements that we have here on Earth, like oxygen, carbon, gold and uranium.
 * Stars have been forming since the Universe began. In fact, astronomers calculate that 5 new stars form in the Milky Way every year. Some have more of the heavier elements left over from previous stars; these are metal-rich stars. Others have less of these elements; the metal-poor stars. The Sun is an example of a metal-rich star.
 * Every star starts out in a mass of clouds and gas called a nebula. Gravity causes hydrogen gas in the nebula to spin. As the hydrogen gas spins, it becomes hotter. It begins to glow. This is a protostar.
 * Small protostars dont have alot of heat (enough heat) to become a real star, Or a star that actually shines. But the bigger protostars spin until they reach extremely hot temperatures. Through this process of nuclear fusion, the hydrogen in the stars begins to turn into helium. This s the same process that the sun goes through. But the Sun spins faster so it lets out more light for us to see.

