NASA (@NASA) “There is more than meets the eye in this photo… The ring around the central gala” — TopicDigg
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加入 December 2007
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There is more than meets the eye in this photo…
The ring around the central galaxy cluster is evidence of dark matter, the invisible glue holding the universe together. Dark matter doesn’t emit, reflect, or absorb light, but it has gravity like ordinary matter. 🧵
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