Last Updated
：2025/11/28
galactic halo
（ plural ）
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(astronomy) An aggregation of individual stars, dust, and gas (and possibly dark matter) that surrounds a galaxy
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galactic halo
Astronomers studying the Milky Way found faint streams of stars in the galactic halo, hinting at past mergers.
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Astronomers studying the Milky Way found faint streams of stars in the galactic halo, hinting at past mergers.
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