Cosmology 101
Whether it is 9 or 15 billion years old, the age of the Universe is just one of the mysteries of the Cosmos. Get a grip on things with our cosmology special.
Created by Tormod Guldvog
Last updated October 26 2007
Cosmology is the study of the Cosmos. Basically, cosmology tries to explain how the Universe became what it is today, and how it has developed since the Big Bang (which, of course, is nothing but a cosmological theory).
Cosmology is a field which requires insight into many other scientific areas, like mathematics, astronomy, physics and chemistry. By applying different explanations to what we observe, scientists can fuse scientific thought to create cross-field theories about our universe.
It is also a field of vast controversy, where philosophy meets science in a big way. Many cosmological views are non-scientific and are based on religious faith or conviction. But, critics argue, where is the science in a field where there is currently only a sample of one universe? Would we categorically state something about, say, a bird if there was only one bird to observe?
Cosmologists seek to solve this dilemma by studying phenomena like dark matter and dark energy, and how matter is distributed in the universe, to confirm theories and formulate new ones. Cosmology is one field where science will perhaps never get it "right".
Among the most recent discoveries, we find evidence that time can only flow in one direction, and that there are structures in the Universe which are incredibly large. Learn more from the links below, and remember to take the poll before you leave!
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Physicists Sets Lower Age Of Universe At 11.2 Billion Years
Recent studies have prompted US scientists to define a minimum age of the Universe. At the same time, their data supports current theories about the role of dark matter in the Cosmos.'Runaway universe' may collapse in 10 billion years, new studies predict
The recent discovery that the universe is expanding at an ever-increasing rate has led many astronomers to forecast a dark and lonely future for our galaxy. According to some predictions, the rapidly accelerating universe will cause all galaxies to run away from each other until they are no longer visible. In this widely accepted scenario, our own Milky Way will become an isolated island adrift in a sea of totally black space 150 billion years from now.Beyond Earth: Mapping the Universe
Sometimes, a book comes along and redefines everything. This is a book that shows what cosmology really is - and why you should learn more about it.Just Six Numbers
If any of the six most fundamental values in our Cosmos were changed, you would not be around. Astronomer Royal Martin Rees asks how come, pointing to endless multitudes of universes which are governed by different physical laws.
The History of the Universe
A very entertaining site presenting a click-by-click history of the Universe.¤
Review: Tormod | link detailsCosmologyWhat Happened Before The Big Bang?
An entertaining article by Paul Davies, about the problems of causality and some rather interesting points about the existence of the universe.¤
Review: Tormod | link detailsCosmologyAsk The Space Scientist About Relativity
Questions and answers about relativity, provided by NASA scientist Dr. Sten Odenwald.¤
Review: Tormod | link detailsCosmologyCosmology and the Origin of Life
This is a web site based on the contents of a talk given by John D. Barrow at the Varenna Conference, Origin of Intelligent Life in the Universe, 30th September 1998.¤
Review: Tormod | link detailsCosmologyDistant galaxies and cosmology models
This is a thorough article on the cosmological models used to measure distances in the universe, written by Edward J. Barlow.¤
Review: Tormod | link detailsCosmologyIntroduction to Cosmology
This web site introduces basic concepts in modern cosmology and describes the MAP mission at a general level.¤
Review: Tormod | link detailsCosmologyNed Wright's Cosmology Tutorial
This is an introduction to cosmology written by an expert at the UCLA.¤
Review: Tormod | link detailsCosmologyDestiny of this Universe
How will our Universe look in the future? How will it end? This is a brief text explaining some of the possibilities.¤
Review: Tormod | link detailsCosmologyRipples in Space, the Origin of Structures in the Universe
An in-depth, very long and non-illustrated article, published by NASA, about how cosmologists are looking for the origin of structures in the Universe.¤
Review: Tormod | link detailsCosmologyFor beginners: History of the Universe timeline
This page is hosted by PBS, and has a great, clickable timeline with brief texts. This is a good way to get the big picture.¤
Review: Tormod | link detailsCosmologyThe History of the Universe
A very entertaining site presenting a click-by-click history of the Universe.¤
Review: Tormod | link detailsCosmologyOrigins: Timeline of the Universe
A NASA site with a cosmic timeline. This is part of the Origins Program.¤
Review: Tormod | link detailsCosmologyA Trip Through The Big Bang
A wonderful presentation of the Big Bang, with animations and sound, presented by the String Theory website.¤
Review: Tormod | link detailsCosmology

