redshift distance relation

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• Redshift — This article is about the astronomical phenomenon. For other uses, see Redshift (disambiguation). Physical cosmology …   Wikipedia

• Redshift — Décalage vers le rouge On se rend compte que les ondes qui proviennent d une source lumineuse sont plus longues lorsque celle ci s éloigne. Les ondes sont « étalées » et la lumière qui nous parvient est donc rougie, c est le décalage… …   Wikipédia en Français

• Angular size redshift relation — The angular size redshift relation describes the relation between the angular size observed on the sky of an object of given physical size, and the objects redshift from Earth (which is related to its distance, d , from Earth). In a Euclidean… …   Wikipedia

• Cosmic distance ladder — * Light green boxes: Technique applicable to star forming galaxies. * Light blue boxes: Technique applicable to Population II galaxies. * Light Purple boxes: Geometric distance technique. * Light Red box: The planetary nebula luminosity function… …   Wikipedia

• Angular diameter distance — The angular diameter distance is a distance measure used in astronomy. The angular diameter distance to an object is defined in terms of the object s actual size, x, and heta the angular size of the object as viewed from earth. d A= frac{x}{… …   Wikipedia

• Luminosity distance — DL is defined in terms of the relationship between the absolute magnitude M and apparent magnitude m of an astronomical object.: M = m 5 (log {10}{D L} 1)!,which gives:: D L = 10^{frac{(m M)}{5}+1}where DL is measured in parsecs. For nearby… …   Wikipedia

• cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium

• List of the most distant astronomical objects — This article documents the farthest known astronomical objects, and the time periods in which they were so classified. Contents 1 List of most distant objects by type 2 Most distant astronomical object recordholders 3 List of most distant objects …   Wikipedia

• Tired light — is a class of hypothetical redshift mechanisms that were proposed as an alternative explanation for the redshift distance relationship as alternatives to the Big Bang and the Steady State cosmologies, both of which proposed that Hubble s law was… …   Wikipedia

• Edwin Hubble — Infobox Scientist name = Edwin Hubble| birth date = birth date|1889|11|20|mf=y birth place = Marshfield, Missouri, U.S. residence = U.S. nationality = American death date = death date and age|1953|9|28|1889|11|20|mf=y death place = San Marino,… …   Wikipedia

• Timeline of cosmology — This timeline of cosmological theories and discoveries is a chronological catalog of the evolution of humankind s understanding of the cosmos over the last two plus millennia. Modern cosmological conceptions follow the development of the… …   Wikipedia