Question

What is dark matter?

Answer 1

All the ordinary matter we can find accounts for only about 4 percent of the universe. We know this by calculating how much mass would be needed to hold galaxies together and cause them to move about the way they do when they gather in large clusters. Another way to weigh the unseen matter is to look at how gravity bends the light from distant objects. Every measure tells astronomers that most of the universe is invisible. 

Answer 2

ⓗⓔⓨ ⓕⓡⓘⓔⓝⓓ

ⓗⓔⓡⓔ ⓘⓢ ⓨⓞⓤⓡ

ⓐⓝⓢⓦⓔⓡ



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⊙ It is a hypothetical form of matter that is through out to space for approximately 85% of the matter in the universe.


⊙ It is about a total of its energy density.


⊙ The majority of dark matter is through out to be non baryonic in nature , possibly being composed of some as yet undisclosed energy particles.



$<font color = red > hope it helps$



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