How much dark matter is there(In Universe)?

Dark Matter is a bizarre, unknown ingredient of the universe, which scientists cannot observe directly, but takes up 80 percent of the mass of the universe.

It is not seen by the naked eye as it does not emit light or energy. There are entire galaxies (like Dragonfly 44) that are made up e...

• A fourth fundamental force of nature that quantum theory cannot explain, namely gravity, doesn't even involve particles. None of the decades of effort can bring gravity under the quantum umbrella to explain all of fundamental physics within one "theory of everything."
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The way massive objects of the universe bend and distort gravity and light indicates to scientists about the existence of dark matter. The way large objects move about in the universe (velocity) also is a factor pushing towards the probability of much more mass than is visible.

Dark matter...