Definition of spiral galaxy in English:

spiral galaxy


  • A galaxy in which the stars and gas clouds are concentrated mainly in one or more spiral arms.

    • ‘Gravitational collisions between small satellite galaxies and big spiral galaxies have long been regarded as possible culprits in the warping of a larger galaxy's disk.’
    • ‘Four years ago astronomers reported that the spiral galaxy 2.2 million light-years from Earth was inhaling two dwarf galaxies, M32 and NGC 205.’
    • ‘By observing infrared radiation from the central region of the Milky Way, astronomers can see through the dust and gas that obscures our visible-light view of the millions of stars in our spiral galaxy's bulge.’
    • ‘They showed us glorious, spiral galaxies and ethereal nebulae - stunning views of places far, far away.’
    • ‘Late spiral galaxies account for only about 45 percent of nearby galaxies, but they were found to contain almost all the supernovas.’
    • ‘Firstly, if we consider a spiral galaxy, such as our own Milky Way, or our neighbour, Andromeda, we can measure its mass by measuring how fast it spins.’
    • ‘The new Whirlpool Galaxy image shows the spiral galaxy's classic features, from its curving arms, where newborn stars reside, to its yellowish central core that serves as home for older stars.’
    • ‘Large spiral galaxies such as our Milky Way, which are rich in gas, would be rarities rather than the rule.’
    • ‘These nebulae, now known to be spiral galaxies like the Milky Way, were usually thought to represent the early stages of formation of structures like our Solar System.’
    • ‘In early 1845, before his telescope was completed, Rosse had resolved his first nebula, discovering it to be a spiral galaxy of stars.’
    • ‘Supernovae appear in spiral galaxies like M81 on average once every 100 years or so.’
    • ‘Has an isolated black hole captured gas while crossing the disk of a spiral galaxy?’
    • ‘Elliptical galaxies tend to be older than spiral galaxies and the stars within them are thought to be around 10,000 million years old.’
    • ‘Telltale patches of blue light are signs of the formation of millions of new stars in the tangled spiral galaxy NGC 7673.’
    • ‘Inside the three million light-year diameter of the Local Group lie the two largest members, spiral galaxies - the Andromeda Galaxy and the Milky Way Galaxy.’
    • ‘Spiral galaxies such as NGC 4414, a dusty spiral galaxy, form from fast spinning hydrogen gas.’
    • ‘Unlike spiral galaxies such as the Milky Way, which contain many young as well as old stars, elliptical galaxies have expended almost all of their gaseous mass as fuel to build new stars.’
    • ‘Another step forward is to understand star formation in other galaxies, for astronomers readily see active star formation in the arms of spiral galaxies and in the collisions of galaxies.’
    • ‘After losing the raw material needed for creating more supernovas, postcollision spiral galaxies become populated with aging stars, as are elliptical galaxies.’
    • ‘He has observed high redshift companion galaxies connected to low redshift spiral galaxies.’
    star system, solar system, constellation, cluster, nebula
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spiral galaxy

/ˈspīrəl ˈɡaləksē/