galaxy

A galaxy is a collection of stars and planets that are held together by gravity. In a galaxy, the celestial bodies rotate around a central object.

The Earth's galaxy is known as the Milky Way. Our solar system, made up of the Sun and the planets that encircle it, is a tiny part of that galaxy. A galaxy can also refer to a gathering of a lot of sparkly people –– like celebrities or sports stars. What gravity holds this galaxy together? Usually cameras.

Definitions of galaxy
  1. noun
    (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust
    synonyms: extragalactic nebula
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    examples:
    Magellanic Cloud
    either of two small galaxies orbiting the Milky Way; visible near the south celestial pole
    types:
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    spiral galaxy, spiral nebula
    a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center
    Great Attractor
    a massive grouping of galaxies in the direction of Centaurus and Hydra whose gravitational attraction is believed to cause deviations in the paths of other galaxies
    Milky Way, Milky Way Galaxy, Milky Way System
    the galaxy containing the solar system; consists of millions of stars that can be seen as a diffuse band of light stretching across the night sky
    Andromeda galaxy
    a spiral galaxy in the constellation of Andromeda that is visible to the naked eye
    type of:
    accumulation, aggregation, assemblage, collection
    several things grouped together or considered as a whole
  2. noun
    a splendid assemblage (especially of famous people)
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    type of:
    accumulation, aggregation, assemblage, collection
    several things grouped together or considered as a whole
  3. noun
    tufted evergreen perennial herb having spikes of tiny white flowers and glossy green round to heart-shaped leaves that become coppery to maroon or purplish in fall
    synonyms: Galax urceolata, beetleweed, coltsfoot, galax, wandflower
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    type of:
    herb, herbaceous plant
    a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
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