WebDec 5, 2012 · Ellipticals are one of three main classes of galaxies defined by American astronomer Edwin Hubble in 1936. Unlike the other two classes—spirals and lenticulars—ellipticals have almost no... A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known –

GALAXY English meaning - Cambridge Dictionary

WebMilky Way Galaxy, large spiral system consisting of several hundred billion stars, one of which is the Sun. It takes its name from the Milky Way, the irregular luminous band of stars and gas clouds that stretches across the … Webgalaxy: [noun] milky way galaxy. any of the very large groups of stars and associated matter that are found throughout the universe. rm1x repair

Galaxies—facts and information - National Geographic

WebFeb 23, 2024 · Galaxies are vast cosmic islands of stars, gas, dust, and dark matter held together by gravity. Hubble’s keen eye has revealed intricate details of the shapes, structures, and histories of galaxies — … WebIrregular. galaxies. Most representatives of this class consist of grainy, highly irregular assemblages of luminous areas. They have neither noticeable symmetry nor an obvious central nucleus, and they are … WebFeb 18, 2024 · quasar, an astronomical object of very high luminosity found in the centres of some galaxies and powered by gas spiraling at high velocity into an extremely large black hole. The brightest quasars can outshine all of the star s in the galaxies in which they reside, which makes them visible even at distances of billions of light-year s. rm1 maxis phone