galaxy group
State of nonexistence; the condition of being nothing. / Void; emptiness. / Quality of inconsequentiality; lacking in significance.
That which is not a legume.
(astronomy) A group of galaxies that hold together gravitationally.
plural of captainship
天文学者たちは、近くの銀河群がゆっくりと単一の巨大な系に合体しつつあることを観測した。
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