Abstract
Physical cosmology is a branch of cosmology concerned with studying
cosmological models. An astrophysical model, or merely cosmology, explains the
largest-scale assemblies and dynamics of the universe and allows the study of
necessary inquiries about its beginning, configuration, progress and conclusive fortune.
In the present chapter, we tried to envelop the fundamental conceptions of Nuclear
Cosmology and Elementary Particles encompassing primary and secondary Cosmic
Rays (CR), the composition of CRs in the solar system and the Galaxy, elementary
particles and their entire characteristics, matter and antimatter, generations of matter
and fundamental forces with necessary schematics and illustrations.