Definition of star stream in English:

star stream

Syllabification: star stream

noun

Astronomy
  • A systematic drift of stars in the same general direction within a galaxy.
    More example sentences
    • We measure the stars’ velocities and search for star streams from past galaxy mergers.
    • Researchers suspect that Sagittarius will one day resemble the star streams and clumps being reported Thursday.
    • Many astronomers believe that star streams such as Hercules - stars that move at the same velocity in a band or stream - are thought to be remnants of those mergers.

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space