Cosmology 101

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!

Related content

Custom Search
Bacteria illustration

Related articles

  • 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.

Related Links

What is a hypography?

Hypography [n.]
A combination of "hyperlink" and "bibliography", i.e. a list of links to electronic resources related to any topic.