When you write your address, what do you include? You can indicate your country, your city and your street. For comparison, let's call the "country" of the Milky Way the "country" of the Earth, the solar system consisting of the Sun and the planets the "city" and the Earth's orbit within the solar system the " street” of the Earth. Thanks to advances in astronomy and physics, scientists have gained extensive knowledge of the value of our specific place in the universe. First of all, the country of Earth; the “Milky Way”. The universe has around 200 billion galaxies. Each of these galaxies contains billions of stars, systems and planets. Our galaxy is the Milky Way as we all know and it is a spiral shaped galaxy. The history of its name dates back to ancient observations and mythology of the Greeks. When observed in a dark sky, the plane of the Milky Way shows light in the night sky, for this reason the Greeks based the original name on the work "Kiklios Galaxios" which means circle milky. Greek mythology describes the Milky Way as milk poured by Zeus and Hera as they tried to feed their young child Heracles. Additionally, the Milky Way has a diameter of 120,000 light years and is believed to be approximately 14 billion years old. Second, our "city", the solar system, is located in the ideal region of the Milky Way galaxy, not too close to the center and not far from it, this area is called the "habitable zone" and contains just the right concentration of chemical elements necessary to maintain life. The Ideal “Street” The “street” or orbit of the Earth within our solar system is no less important. "city". About 93 million kilometers from the sun, this orbit is in a limited zone that is habitable because life does not freeze or fry. More...... middle of paper ...... were created. This can cause fear and make them wonder why didn't the black hole in our solar system eat the earth???; These black holes can scare someone, but they are not as destructive as you think. It is impossible for a black hole to destroy the Earth for two main reasons: First, there is no black hole near our solar system, the closest is 1600 light years away. Second, in our solar system there is nothing large enough to create a black hole that would endanger Earth. Its colossal size, precision and scope could never exist, just by coincidence. All these things must be based on superior genius. This essay has just shown a very small part of our universe. This essay I wrote is the only upper part of a glacier floating along the sea. There are things that are beyond description and even belong to our knowledge..