Introduction

A look up at the sky at night uncovers an expansive broad strip of light. This captivating line of light is the focal point of our universe, as observed from one of its external arms. Understanding the structure of the Milky Way has always been a difficult challenge as the Universe is huge enough to study. The close planetary system sits on the external edges of one arm in a circle of material. Cosmic systems are rambling frameworks of residue, gas, dim issue, and anyplace from a million to a trillion stars that are held together by gravity. Almost all enormous systems are thought to likewise contain dark gaps of huge masses at their focuses. In our system, that is the Milky Way, the sun is only one of around a hundred to four hundred billion stars.

Many observations and debates had been done on the Milky Way. Everybody was eager to know the reality behind this mystery. The band of light was first resolved into separate stars by a renowned space scientist “Galileo”, with his telescope. Galileo's discoveries are very famous.Cosmologists imagined that every one of the stars, known to mankind, is contained in the Milky Way. This assumption was done at the start of the 1920s. There was a big debate between Harlow Shapley and Heber Curtis about the topic.  Later on, observations were made by Edwin Hubble and he brought up a conclusion that the Milky Way is actually one of the galaxies.

Milky Way Galaxy

Galaxy contains a star and many planets revolving around it. This galaxy is known as Milky Way Galaxy. The more profound we investigate the universe, the more cosmic systems we see. One examination was done in 2016 that evaluated that the perceptible universe contains two trillion or 2,000,000 million galaxies. A portion of those far off frameworks resembles our own Milky Way world, while others are very distinct. Milky Way is probably the only galaxy where life exists. What bounds the gas, dust and the big group of stars in the galaxy, is the gravity. The Milky way system is an enormous banned winding spiral galaxy. There are stars of various shapes and sizes. We see stars at night and wonder they are near but in reality, they are very far and appear in our Milky Way. The name Milky Way was given to our galaxy since it shows up as a smooth band of light in the sky when you see it in an extremely dark area. Since there are many stars in the galaxy, so it is difficult to count their number from the position where we are. An estimate says that there are around a hundred billion stars.

A light-year is mostly used to express astronomical distances. Since our solar system is much far away from the galaxy, so we can somehow say that solar system lies about twenty-five thousand light-years away from our galaxy.Our world likely contains hundred to four hundred billion stars and is around one hundred thousand light-years over. That sounds enormous, and yet it is. The Andromeda galaxy, known to be our neighboring galaxy, is around two hundred and twenty thousand light-years wide. We live in the outskirts of the galaxy.Just like the Sun circumvents the focal point of the Milky Way, the Earth circumvents the Sun. So, it takes almost two hundred and fifty million years for our sun and the planetary group to go right around the focal point of the Milky Way.

What NASA says about Milky Way

The National Aeronautics and Space Administration (NASA) is the US government agency that is in charge of aviation research, air transportation, and the ordinary citizen space program. Where explorers chart the continents of the globe, out astronomers have engaged themselves in making up the map of the spiral structure of the Milky Way. Utilizing infrared pictures from NASA's Spitzer Space Telescope, researchers have found that the Milky Way's exquisite winding structure is overwhelmed by only two arms. Beforehand, our cosmic system was thought to have four noteworthy arms.

NASA’s James Webb Space Telescope is the most dominant as well as complex space telescope. It will investigate the universe utilizing infrared light, from planets and moons inside our close planetary system to the most antiquated and far off galaxies.When we talk about the tremendousness of the universe, it's easy to hurl out enormous numbers, however progressively hard to fold our brains over exactly how huge and far various divine bodies truly are.

At the focal point of the spiral, a great deal of vitality is generated along with clear flares, once in a while. In light of the massive gravity that would be required to clarify the development of stars and the energy discharged, the space experts infer that the focal point of the Milky Way is a dark hole having a mass of millions or billions of times than that of the sun.Different galaxies have different shapes. Some galaxies have circular shapes, and a couple of others have strange shapes just like toothpicks or rings.