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darkgothmog t1_iydnhfs wrote

Reply to comment by OtakuMage in Galactic cannibal Andromeda feasts on smaller galaxies, cosmic leftovers reveal by nikola28

I found out an article there https://www.astronomy.com/news/magazine/2018/02/adromeda-is-the-same-size-as-the-milky-way

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OtakuMage t1_iydxpco wrote

Interesting. Less dark matter isn't what I was referring to specifically though. Still seeing it listed as about 200,000 light-years in diameter, which is double the Milky Way.

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MarkHamillsrightnut t1_iyeiekr wrote

I think you're right. According to a quick google search Andromeda has about a trillion stars compared to the estimated 300 billion the Milky Way has.

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SeeTreeMe t1_iyepo2h wrote

It has way more stars but it’s mass could be anywhere from 1.8x ish to actually less than the Milky Way (according to wiki). There’s some pretty big error bars on it.

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