Did you know the Gold ring or Any ornament you have made of Gold used to be a star in the universe about 4.5 Billion years? How do we exist? How has the Earth born? What are laws working around us? Is Sun going to die? Why If the sun is Star, It shines differently than Other Stars in the Universe? Why has It been said that Black hole may be a potential threat to the existence of Earth? What Makes Universe Expanding and Is Big Bang Theory really Correct and there is no God. There are a lot of more question I begin to ask myself that made me read and learn the very complex subject that is PHYSICS.
When I was in school, I always afraid of science subject however since now I am able to connect it with my existence I think science is a subject that shall not be limited to certain scholars. I highly recommend making Physics and Biology as a Mandatory subject at the College level, at least for knowledge purpose. The subject is already available for school student but it is essential to consider the age of maturity and ability of research of the reader, which indicates to include this knowledge at the college level too. In past 10 days, I bought Standard 5 to 12 Science book of school and watch the documentary The Gravity, into the universe etc. It took me two fast and scarifies of two-night sleep, to understand the Einstein’s Theory of Relativity both general and special and Why Time and Space is important.
When an apple fell on the ground, Issac Newton discovers Gravity, however, the greatest flaw of Newton’s Theory was that He considers The force of gravity is god made or he was not able to understand what process exactly occur that everything attracts to the ground like an apple. However, in next few year, Einstein explains his theory of Relativity (General and Special) which answer how Gravity works. I would like to inform the reader that the purpose of this article is to provide you information in best simple form so everybody could understand therefore I have avoided technical terms and explanation. Special relativity is a theory of the structure of space time. It was introduced in Albert Einstein’s 1905 paper “On the Electrodynamics of Moving Bodies” (for the contributions of many other physicists see History of special relativity). Special relativity is based on two postulates which are contradictory in classical mechanics:
  1. The laws of physics are the same for all observers in uniform motion relative to one another (principle of relativity),
  2. The speed of light in a vacuum is the same for all observers, regardless of their relative motion or of the motion of the source of the light.
Science is largely based on experimental and underlying assumption. Some theory has been assumed until new theory introduced, however, the Gravity and Relativity theory is widely practically accepted. The one word answer for our and our earthly existence is The Force of Gravity and So called Big Bang Theory. There are different views for the Big bang theory. 
World’s most recognized scientist Stephen Hawking explain the universe, it’s working process interestingly. He has explained black hole which may be a potential danger to our earth as it eats up matters and everything in the universe is made of matter. The complex thing about the black hole is that it exists but we could not see it. We do not know what’s in it. But due to radiation, we can know its presence. Now Big Bang answer for our existence. 4.5 billion years ago, There was nothing in the space rather than one giant hot and full of gases Plant or call anything. before the universe, there was a large ball of molecules and particles that was shrinking in size. when it could not shrink no more, it “exploded” and created the universe.”.The Big Bang was definitely not a supernova. Before the Big Bang, there was only energy; no matter, no molecules, no particles. The latest theories suggest that the energy of the Big Bang was released as a result of the collision of two branes. As soon as the energy was released, a period of inflation of space-time occurred, and the first subatomic particles were then formed according to Einstein’s famous formula E=mc2… eventually forming hydrogen. These H molecules rapidly coalesced and the first stars were formed, fusing H into He, and so forth, the stars forming into galaxies that continued to fly apart in this expanding spacetime.
Where was this “ball” located? The thing is the “ball” that formed just AFTER the Big Bang was the whole universe. You might as well ask “Where is the universe located?” The answer: Everywhere, and every time is where the universe is located: From the α to the Ω. Now In present Scenario, The probability can not be denied that out of our Galaxies there many be N number of earth like us where people like us living.
Like a human being, Every star in the universe born, grow and die. Sun is also a star and it is the large tool that kept the earth alive. Sun is in his middle age, when it gets blue it would be in his dying phase which would take million/billion more year. When the sun dies, The earth will start dying without the source of energy. The force of Gravity is highly active into the center of the earth, so the matter will have more weight there than any other place in the world.

The complex part of the scientific theory is that it completely denies that God created us or universe. There is a question though that how really we come into existence and there is no proper answer for it. It is also said that The earth and universe were like it from the beginning and will remain same.
The Iron, Aluminium, carbon, Diamond, gold, Mineral everything bumped up and stick in together made an Earth and what made it stick it together is the force of Gravity and the reason we remain on earth is also the force of gravity. In a scientific way, Our body is also made of chemical and gases that are found in universe matter. It is certain that The earth we live one day and as a part of the process, however, there may be N number of earth and billion of years process remain in place to create the same universe like us. It is also possible that comet in a big size hit to the earth and we end up like said, one of the comment will pass closely from the earth in next few year which may or may not hit the earth. Whey you study History of Universe, Physics, History of World Religion and Philosophy I think you know could develop an understanding that makes sense for everything around you, you feel, you eat. I love Physics as it implies future of My race.

Read This Book for fascination information about the Universe.