Astronomy

ASTRONOMY By Nyla Williams D-Block TABLE OF CONTENTS Chap.1- Origin of reality Chap.2- wiz Life Cycles Chap.3- Planets in our Solar System Chap.4- Galaxies Chap.5- ISS Chap.6- Spin-offs Chapter 1: Origin of The Universe The Big chouse Theory, the most wide original theory, was an fit creating the universe. It happened 15-20 one thousand million historic period ago. The universe, to begin with it was the universe, began as an infinitely hot, dense, fireball which and so expand promptly and became flooded with subatomic particles. Those particles thence slammed into one another(prenominal), operateing protons and neutrons. It then took another 500 megabyte years for atoms to form. 300 one thousand million more years later, spark advances and galaxies began to form. Then finally, 4.5 billion years ago, our solar system and gravity formed. There is pickle of evidence to figure that the Big strike Theory did in fact happen. Scientists ascertained radiation that would only make it from a huge explosion. Also, particles of debris and louse upes also show evidence of a massive explosion throughout space. Even though this is a widely accepted theory, there argon still clean unanswered questions. Like, How and why did the universe expand? What caused the galaxies to form?

But, perchance the most daunt question is: What existed before the Big Bang? This shows that although this theory has some very convincing evidence, it is still a theory. Chapter 2: Star Life Cycles Even though stars argonnt living, they do in fact have life cycles. They are born and then the! y die. However, not literally. Before stars are born, they go off as part of a nebula which is cloud of gas and spit. A star is born when the contracting gas and dust from a nebula sour so dense and hot that thermonuclear fusion starts. A nuclear fusion is the process which atoms come to shrinkher and form heavier atoms. During nuclear fusion, enormous amounts of energy are released. How long a star lives depends on its mass. Stars...If you want to get a beneficial essay, order it on our website: OrderCustomPaper.com

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