dwarf spheroidal galaxy

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

(astronomy) A faint galaxy, devoid of gas, having a higher than normal proportion of dark matter; especially those that orbit the Milky Way and Andromeda

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The nearby dwarf spheroidal galaxy offers a rare opportunity to study dark matter without the complication of gas and star formation.

詳細

意味（1）

(astronomy) A faint galaxy, devoid of gas, having a higher than normal proportion of dark matter; especially those that orbit the Milky Way and Andromeda

The inventory keeps growing, and the latest recruit is a dwarf spheroidal galaxy, meaning no gas and not many more than 10⁶⁻⁷ stars, that has the bad luck to be almost on the far side of the galactic centre from us.

詳細

dwarf spheroidal galaxies （ plural ）