Almost all the large galaxies are predicted to have a supermassive black hole at their centers just like the Milky Way.Galaxies are a combined system of gas, dust, dark matter, and stars ranging from a million to about a trillion which are all held together by gravitational forces.These modify the spiral arm formation and effects the gas rotation in the outer galaxy region. Galaxies have strong magnetic fields that drive the inflow of mass towards the center of these galaxies. The nearest galaxy to our Milky Way Galaxy is the Andromeda galaxy which is at a distance of 2.5 million light-years. A large amount of dark matter of the galaxy has an invisible halo which is responsible for the Milky Way spin. It is made up of 10% luminous matter and over 90% of dark matter. The Milky Way galaxy has a barred spiral shape. We exist in one of the spiral arms of the galaxy that is formed of giant gas clouds and star clusters. The galaxy has four spiral arms that emerge from its center. The band of the galaxy can be seen in dark areas through Atacama Large Millimeter/sub-millimeter Arra (ALMA) antenna. Milky Way is formed of billions of stars, one amongst them is the sun. It has a length of 1,00,000 light-years and its width extends up to 10,000 light-years. It is a hazy band of stars in the night sky that can not be differentiated by our naked eye. The Milky Way Galaxy or the Akash Ganga is our home galaxy. The Principle of Homogeneity of Dimensionsįundamental and Derived Units of Measurement Some of them are Andromeda Galaxy, the Whirlpool Galaxy, the Magellanic Clouds, and the Sombrero Galaxy. A few of the identified galaxies have well-distinguished names. In between the galaxies, the space is filled with an intergalactic medium, a tenuous gas with a mean density of one atom per kiloliter. approximately between 1,000 to 100,000 parsecs. Most of the galaxies have a diameter between 3,000 to 300,000 light-years i.e. When the Hubble Space Telescope observed a small part of space continuously for a duration of 12 days, it was able to identify more than 10,000 galaxies in the universe. Our universe altogether comprises approximately seventy thousand million stars and there are billions of galaxies in the universe. A huge amount of radiation, heat, radio waves, and x-rays are emitted from the center of the galaxy. Each galaxy is formed of millions of stars held together by a gravitational force. Our universe is vast in size and is composed of multiple galaxies.
Galaxy refers to the sprawling space system that comprises stellar remnants, dust, interstellar gases, and even dark matter, all bound together by the force of gravity.
0 kommentar(er)
