Warm dark matter

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Notion

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Science and technology

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What Wikipedia says

Warm dark matter (WDM) is a hypothesized form of dark matter that has properties intermediate between those of hot dark matter and cold dark matter, causing structure formation to occur bottom-up from above their free-streaming scale, and top-down below their free streaming scale.

Excerpt from the Wikipedia article “Warm dark matter”, under the CC BY-SA 4.0 license. Read the article on Wikipedia