Question

What is nonbarynoic matter? Give examples

Answer 1

Non-baryonic is a matter which do not mainly composed of baryons. It may include free electrons and neutrinos.
It is of two forms :
cold non-baryonic matter - in which particles move much slower than light.
hot non-baryonic matter- in which the particles moves very fast like neutrinos.
Non-baryonic matter interacts wealky with the radiation.