Only Dark Matter (And Not Modified Gravity) Can Explain The Universe

There have been a lot of public advocates from the “no dark matter” camp, getting lots of popular attention. But the Universe still needs dark matter. Here’s why.

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What would be the size and mass of dark mater.

Does it have mass?

Does it have size ?

If it has size, is it smaller than a quark / neutrino ?

Tau.Neutrino said:

What would be the size and mass of dark mater.

Does it have mass?

Does it have size ?

If it has size, is it smaller than a quark / neutrino ?

It has mass, speed, momentum, size.

Smaller than a quarks/neutrino is the axion hypothesis. Or more generally the search for axion-like particles.