Question

I need a complete information of dark matter nd black holes​

Answer 1

Answer:

Primordial black holes are non-baryonic and as such are plausible dark matter candidates. ... The unexpected large mass of the black holes detected by LIGO has strongly revived interest in primordial black holes with masses in the range of 1 to 100 solar masses.

Explanation:

Answer 2

Answer:

Dark matter, a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. ... Dark matter makes up 30.1 percent of the matter-energy composition of the universe; the rest is dark energy (69.4 percent) and “ordinary” visible matter (0.5 percent).

A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes.