WebMay 19, 2024 · But only in the past few decades have we come to understand that the Milky Way is one of the 100 billion galaxies in the universe, and that its disk stretches some 100,000 light-years across. It contains some 400 billion stars, although we don’t know exactly how many because dwarf stars are faint and difficult to see over long distances. WebApr 5, 2014 · How many stars are in the local group? The Local Group is a group of over 54 galaxies. Each has billions and billions of stars. All together, there is about 1.5 trillion …
Types of Galaxies NASA Space Place – NASA Science for Kids
WebTypes of Stars. NASA’s Solar Dynamics Observatory captured this image of our 4.6-billion-year-old Sun, a main sequence star. Scientists expect it will remain one for another 5 billion years before becoming a red giant. Credit: NASA's Scientific Visualization Studio/SDO. The universe’s stars range in brightness, size, color, and behavior. WebToday, we understand that at least some galaxies have changed types over the billions of years since the universe began. As we shall see in later chapters, collisions and mergers between galaxies may dramatically change spiral galaxies into elliptical galaxies. ... Spiral galaxies contain both old and young stars, as well as interstellar matter ... flight gwalior to mumbai
How do stars and planets form and evolve? Center for …
Web12 hours ago · That's likely the reason M87's central black hole is so large — it assimilated the central black holes of all the galaxies it swallowed. In all, the galaxy contains about 100 billion stars, 10 ... WebFeb 23, 2024 · They possess comparatively little gas and dust, contain older stars and are not actively forming stars anymore. The largest and rarest of these, called giant ellipticals, are about 300,000 light-years across. ... The appearance and make-up of galaxies are shaped over billions of years by interactions with groups of stars and other galaxies ... Web5.0 (1 review) A) all galaxies were born at the same time, and all will die at the same time. B) all galaxies contain billions of stars, and all galaxies have spiral shapes. C) all galaxies outside the Local Group are moving away from us, and the farther away they are, the faster they're going. flight gwalior to bangalore