Cosmology
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Cosmology
Cosmology (pronounced: koz-MOL-uh-jee) is a branch of astronomy that involves the study of the origins and evolution of the universe, from the Big Bang to today and on into the future. It is the scientific study of the large scale properties of the universe as a whole.
Etymology
The term "cosmology" is derived from the Greek words "kosmos" which means world or universe, and "logos" which means study or word.
Related Terms
- Big Bang: The cosmological model that explains the early development of the Universe.
- Cosmic Microwave Background: The thermal radiation left over from the time of recombination in Big Bang cosmology.
- Dark Matter: A form of matter thought to account for approximately 85% of the matter in the universe.
- Dark Energy: A hypothetical form of energy that exerts a negative, repulsive pressure, behaving opposite to what we think of as normal matter.
- Universe: All of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
- Multiverse: A hypothetical group of multiple universes.
- Astrophysics: The branch of astronomy that employs the principles of physics and chemistry to ascertain the nature of the astronomical objects.
- Galaxy: A gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
See Also
External links
- Medical encyclopedia article on Cosmology
- Wikipedia's article - Cosmology
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