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Milky Way

The Milky Way (銀河系) is a galaxy (microcosm) to which our solar system belongs. It is estimated to be about 80,000 to 100,000 light years in diameter and contains hundreds of billions of stars.
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The Milky Way (銀河系, Gingakei) is the galaxy to which the solar system, including the Earth, belongs. Also called the Milky Way Galaxy, the Milky Way is the galaxy itself as seen from the inside.


It is composed of a staggering 200-400 billion stars with diameters of 80,000-100,000 light-years, yet its stellar mass is only a fraction of the total mass of the Milky Way (about 1.26 trillion times the mass of the Sun) (most of the rest is dark matter).


Related Articles編集

Universe Solar System Galaxy Microcosm

External Links編集

English編集

Milky Way - Wikipedia

Japanese編集

銀河系 - Wikipedia

銀河系とは (ギンガケイとは) [単語記事] - ニコニコ大百科 (NicoNico Encyclopedia)

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銀河系

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