Astronomy

ASTRONOMY By Nyla Williams D-Block TABLE OF CONTENTS Chap.1- Origin of globe 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 zillion historic period ago. The universe, beforehand it was the universe, began as an infinitely hot, dense, fireball which and so expand chop-chop and became flooded with subatomic particles. Those particles thence slammed into one another(prenominal), operateing protons and neutrons. It then took another 500 m 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 jam of evidence to figure that the Big bang Theory did in fact happen. Scientists ascertain ed radiation that would only aim from a huge explosion. Also, particles of debris and botches also show evidence of a massive explosion throughout space. Even though this is a widely accepted theory, there be still middling unanswered questions. Like, How and why did the universe expand? What caused the galaxies to form?

But, by chance 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 arnt living, they do in fact have life cycles. They are born and t hen they die. However, not literally. Bef! ore stars are born, they move off as part of a nebula which is cloud of gas and patter. A star is born when the contracting gas and dust from a nebula sour so dense and hot that atomic fusion starts. A nuclear fusion is the process which atoms come to popher 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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