this post was submitted on 15 Oct 2024
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Dark matter does not exist and the universe is 27 billion years old, study claims (www.earth.com)
submitted 1 month ago by EherVielleicht@feddit.org to c/science@lemmy.world
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[–] acosmichippo@lemmy.world 13 points 1 month ago* (last edited 1 month ago)

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.