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词汇 galactic halo
释义

Definition of galactic halo in English:

galactic halo

noun

  • A roughly spheroidal part of many spiral galaxies that surrounds the disc and the bulge and is more diffuse, containing stars that are older; specifically that of the galaxy to which the solar system belongs, which contains stars and globular clusters.

Origin

1950s; earliest use found in Astrophysical Journal.

Definition of galactic halo in US English:

galactic halo

noun

  • A roughly spheroidal part of many spiral galaxies that surrounds the disc and the bulge and is more diffuse, containing stars that are older; specifically that of the galaxy to which the solar system belongs, which contains stars and globular clusters.

Origin

1950s; earliest use found in Astrophysical Journal.
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