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- Title
Cosmology: Patchy solutions.
- Authors
Ellis, George
- Abstract
The article reports on the expansion of the Universe which has been observed accelerating. The fundamental dynamics of the Universe are embodied in Albert Einstein's general-relativistic field equations describing how gravity arises through the distortion of space-time by mass and energy. Inhomogeneities also affect cosmological observations of distant sources which are sensitive to focusing effects on the emitted light caused by changes to local gravitational field. It is noted that testing the existence of the requisite spatial inhomogeneity is difficult with observations of galaxies or other since their evolution over time is unknown.
- Subjects
METAPHYSICAL cosmology; EXPANDING universe; ANALYTICAL mechanics; MECHANICS (Physics); SPACETIME; GRAVITY; ASTROPHYSICS; GRAVITATIONAL fields; FIELD theory (Physics); GALAXIES
- Publication
Nature, 2008, Vol 452, Issue 7184, p158
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/452158a