Disciplines & Professions: Cosmology
Cosmology is the astrophysical study of the history, structure, and dynamics of the universe. It addresses fundamental questions about the nature and evolution of the universe.
Cosmology includes topics such as Big bang, Cosmic abundance, Microwave background, Cosmological constant, Dark energy and matter, Event horizon, Expansion of the universe, Galaxy clusters, Hubble expansion, Inflation, Olber's paradox, Redshift, Steady state theory and Universe.
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Featured Article
Spacetime: Geometry
Introduction In ordinary geometry, points are labeled by their coordinates P1 = (x1,y1,z1,...) and P2 = (x2,y2,z2,...). In spacetime, points are called "Events" and are represented with a mix of...
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Featured Blog Post
Notes from the Astronomy Underground- Astropalooza
According to the tagline in Ridley Scott’s 1979 blockbuster Alien, “In space, no one can hear you scream.” It’s true that sound waves, unlike light, need a medium- some kind of...
Featured Resource
Cosmic Journey - A History of Scientific Cosmology
The history of cosmology is a grand story of discovery, from ancient Greek astronomy to space telescopes. This Website, prepared by experts, mirrors the structure of the science, with cosmological theory and astronomical instruments side by...
Latest News
Rewriting general relativity? Putting a new model of quantum gravity under the microscope
American Physical Society (Aug. 24, 2009) – Does an exciting but controversial new model of quantum gravity reproduce Einstein's theory of general relativity? Scientists at Texas A&M University...
Articles
Introduction During this century, the search for a theory of quantum gravity has followed one or the other of ...
Introduction In the spirit of the Nordstrom-Kaluza-Klein theory which involved adding a 5th dimension to space...
Introduction Apart from the ambiguous experimental evidence that gravitational radiation exists but its quanta...
Introduction The work by Max Planck on the blackbody spectrum, and by Albert Einstein on the photoelectric eff...
Unification There is also the question of just what is meant by unification. Is it sufficient for all fields t...
Introduction The central issues behind these studies are deceptively simple to state: What is the quantum mech...
Introduction String theory does not do away with the need for some kind of background spacetime. The equations...
Blog Posts
A.k.a. The Digital Universe: Now with 10% more dark energy. Things have been rather frenzied this summer, to s...
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