2023-07-29 17:20:28
The term “The Milky Way” was in common use in Western astronomy 2,500 years ago, and there is no way of knowing who coined it and how it originated. It is one of those terms so old that its origin is now generally forgotten. Our galaxy, the “Milky Way”, is known by different names around the world. In China it is called the “Silver River” and it is called the “backbone of the night” in the Kalahari desert in South Africa, while it is called The Arabs call it the “Milky Way” and in other languages it is called “The Milky Way”, but how did the Milky Way get its name for the first time and who did it, and what is the secret behind choosing those names? According to the American Museum of Natural History (AMNH), the galaxy is called the “Milky Way,” a translation of the Greek expression Galaxias Kiklos, meaning milky circle. And the “Space” website states that this name came due to the apparent milky white appearance of the galaxy that extends across the night sky. As for the Arabic name “Milky Way”, it came as a result of likening the galaxy to a white road made of hay like what cattle drop behind while carrying it on their backs, and thus its effect appears on the ground as twisted arms similar to the arms of the galaxy. At the time, no one knew that what they were seeing in the dark night sky was a tuft of millions of separate stars that make up a small part of the galaxy in which our solar system resides. The Milky Way Galaxy The Milky Way is estimated to be 13.2 billion years old, and it is one of the billions of galaxies in the known universe. Other galaxies may be larger and more ancient, but the Milky Way has long fascinated humans. It was recognized by astronomers thousands of years ago and mythologized by ancient civilizations. According to Live Science, our galaxy has a diameter of 100,000 light-years, and is believed to contain at least 100 billion stars and possibly 400 billion or more. It is a spiral galaxy with 4 main arms. Our sun and solar system sits on a small structure known as the Orion Arm, regarding 26,000 light-years from the center of the Milky Way. The name “Milky Way” came as a result of the galaxy’s likeness to a white road of hay like what cattle drop behind it (Shutterstock). But how and when did this galaxy get its name? Matthew Stanley, a professor of the history of science at New York University, tells Live Science that it’s not clear exactly when the name appeared. But early mentions of the Milky Way can be traced back to the ancient Greeks (800 BC to 500 BC). “The term was in common use in Western astronomy 2,500 years ago,” says Stanley, referring to stargazers in European countries, so there’s no way of knowing who coined it and how it came regarding. It is one of those terms so ancient that its origin is now generally forgotten. Stanley added that the Milky Way provided astronomers with the Greek root for the astronomical term “galaxy”, and the word (Galactos) literally means “the milky thing in the sky”. Although the first astronomers may have noticed the Milky Way, they did not know what it was until the Italian astronomer Galileo Galilei directed his telescope to the sky in 1609, and discovered that some of the puzzling cosmic dust clouds that everyone had observed before consisted of stars close together. How are galaxies named? Scientists estimate that there are 100 billion to 200 billion galaxies in the known universe, so it will be difficult to obtain descriptive names such as Andromeda, the Milky Way, and others for each of them, so the vast majority of galaxies are named with a number followed by one or more letters, such as “M51” and “GN-z11”. ″ and “IOK-1.” The numbers following the letter names may indicate either the order in the list or the location of the galaxy in the sky. The NASA website states that for galaxies that are given descriptive names such as “Andromeda,” they are usually particularly distinctive in location or appearance. The Andromeda Galaxy was named by this name because it is located in the constellation Andromeda (Shutterstock). Most of the galaxies were named in the list drawn up by astronomer Charles Messier, and it is among the oldest in the field of observing objects in the sky. Messier was searching for comets in the 18th century AD, but he He kept finding things other than comets that looked mysterious so he created a catalog of these objects and listed their locations so he wouldn’t be fooled once more into thinking they were comets. A number of the mysterious objects Messier spotted were later identified as galaxies. However, Messier’s cataloging system was completed in a random way, so you will find that M1 (the Cancer nebula in the constellation Taurus) is nowhere near M2 (a globular cluster in Aquarius). As the capacity of telescopes grew, major lists were created such as the New General Catalog NGC, which is one of the oldest lists of nebulae and star clusters. It was published by Danish astronomer John Louis Emil Dreyer in 1888 and is still widely used. In the NGC list, objects in the sky are numbered from west to east, so that all objects in the same region of the sky have similar numbers. Andromeda also bears the name “Messier 31” because it is the 31st object in the Messier list (Shutterstock). Why are there many names for the same galaxy? According to the “universetoday” website, there are many names for one galaxy. The Andromeda Galaxy, for example, was named by this name because it is located in the Andromeda constellation. Many galaxies are named following the constellation in which they are located. Andromeda is also named M31, or Messier 31, since it is the 31st object on Messier’s list of comet-like objects that are not comets. Andromeda is also classified as “NGC 224” in the NGC list. There are also specialized lists that describe objects in other wavelengths, such as x-rays and even gamma rays. Many galaxies will have names in those lists, so a galaxy can have many names, it just depends on which name you want to use and the context in which it comes in. In the event that you discover a new galaxy, you cannot name it following you or call it any other name you want, because the International Astronomical Union maintains the official names of astronomical objects.
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