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Thanks a lot!

I have by the way read your post. It is interesting, indeed. However, there is no proof dark matter is there, and there are theories without dark matter and with modified gravity instead that work as well.

Just a comment: it may be better to summarize what you read with your own words and give the link to the original article, instead of quoting the huge article. This is known to get better rewards on steemit :)

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