Cosmology is the study of the large-scale structure and history of the universe. In particular, it deals with subjects regarding its origin. It is studied by Astronomy, Philosophy, and Religion. See also cosmogony.

Physical cosmology-

The Friedman-Robertson-Walker metric
The Big Bang
The shape of the universe in big bang theory
Cosmic Background Radiation
Beyond the standard Big Bang model
Quasi steady state theory
Cosmic inflation
The Ultimate fate of the Universe
Large Scale Structure of the Cosmos - few 100 Mpc - a few percent of the horizon
Galaxy Formation and Evolution
The dark matter problem
Topological defects
Cosmic variance
Dark energy

According to the proposed extreme circumstances during the first minutes of the universe's history, Big Bang cosmologists often co-operate with scientists from areas such as Particle physics.

Alternative cosmologies-

Plasma cosmology
Steady state theory

Philosophical cosmology-

Presocratic philosophers
Anthropic principle

Religious cosmology-

Creation myth
Creationism

(from Wikipedia )