Matter/ dark matter/ anti-matter relationaship (lemmy.world)

submitted 2 days ago by [email protected] to c/[email protected]

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We know pretty well what matter is and how it interacts with the others.

Dark matter interacts through gravity but not light. Beyond that I haven't heard much else.

And lastly anti-matter has an opposite charge and interacts with matter through annihilation. I think I remember hearing that it would react with dark matter the same way.

So my question is, does anti-dark matter exist, and what are it's properties?

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[-] [email protected] 5 points 2 days ago* (last edited 2 days ago)

The problem with matter that doesn’t interact electromagnetically is that everything else can pass right through it. (That’s why dark matter theoretically remains in halos around galaxies instead of getting incorporated into galactic discs via friction with other matter.)

If dark matter can only interact via gravity, it can only attract other matter toward it (albeit very weakly)—including both matter and antimatter. So it can’t keep matter and antimatter apart.

You’d also have no way of manipulating the dark matter itself, except through gravity.

[-] [email protected] 2 points 2 days ago

Well darn...

this post was submitted on 11 Jul 2025

12 points (92.9% liked)

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