this post was submitted on 15 Oct 2024
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science
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just science related topics. please contribute
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I think you're conflating dark matter and dark energy, they are two different things. Dark Energy is what's accelerating universal expansion. Dark Matter slows it down.
and I would actually classify them as "known unknowns" since they are holes in our understanding of physics that we're aware of. A true unknown unknown wouldn't be in scientific discussion at all or have even been given a name; it would be completely off our radar.