It doesn't appear to be dark, but transparent, AFAIU. For an object to be "dark"... | Hacker News

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tremon on Oct 17, 2019 | parent | context | favorite | on: Dark matter nightmare: What if we are just using t...

It doesn't appear to be dark, but transparent, AFAIU. For an object to be "dark", it has to be actually absorbing light, and I think dark matter doesn't actually absorb it, it just doesn't interact with it (except for gravitational lensing).

Or at least, that's what I've always understood. Not a physicist though.

mapcars on Oct 17, 2019 [–]

I would say "dark" here is more like "unknown" than a color reference, while both obviously have a connection in how we experience.

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