Cosmology is the scientific study of the structure and origin of the universe as a whole.
Submissions may be geared toward any educational level, from barely reading to professional researchers in the field. Consider submitting sites aimed at high school level or less also to Kids and Teens:School Time:Science:Astronomy and Space.

This category is for modern cosmology only. Please submit historical cosmology (about what was considered to be the entire universe at the time being treated) to Science:Astronomy:History:Worldviews.

Articles on specific cosmological topics (excluding those that have their own categories).
Please have a look at the topics that have their own subcategories (cosmic background radiation, dark energy etc.). If your site fits in there, please submit it in that specific subcategory.
Sites that deal with the "electromagnetic echo" of the big bang phase, the cosmic background radiation. Also includes observational missions specifically directed at observing the cosmic background radiation and its properties.
Sites dealing with explanations for the observed acceleration of our universe's expansion, which can be described either by what is called the cosmological constant or by assuming that empty space is filled with an energy form known as Dark Energy.
This category hosts course descriptions and tutorials for (university-level) courses on cosmology.
By observing galactic motions and from cosmology we know that there is a mass in the Universe that we cannot observe so far. It is called dark matter, as opposed to bright stars. It could be some kind of elementary particles.

For quicker placement in the directory please follow these Submission Tips:

Title: Name of Site or Organization

Description: This describes the website and should note distinguishing features found on the site without the use of hype, personal pronouns, or repetitive terms.

Sites on physics in the earliest universe, where quantum gravity effects were important. Includes quantum cosmology and cosmological models based on string theory.
Sites and articles dealing with the history of (modern, as opposed to ancient) cosmology
Site dealing with the inflationary models of standard cosmology. Such models describe a period of rapid expansion that takes place a split second after the big bang.
Sites and articles dealing with the formation of the universe's large-scale structure. Includes both observations of that structure and simulations of structure formation.
Sites about the formation of the first chemical elements - nuclei other than that of hydrogen - during the first few minutes after the big bang.
Homepages of research groups whose main focus is cosmology.
Software that can be used either for learning cosmology or for cosmology research.