spiral nebula

Definitions of spiral nebula
  1. noun
    a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center
    synonyms: spiral galaxy
    see moresee less
    types:
    Andromeda galaxy
    a spiral galaxy in the constellation of Andromeda that is visible to the naked eye
    type of:
    extragalactic nebula, galaxy
    (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust
Word Family