Hubble's law — Physical cosmology Universe · Big Bang … Wikipedia
Redshift — This article is about the astronomical phenomenon. For other uses, see Redshift (disambiguation). Physical cosmology … Wikipedia
Big Bang — This article is about the cosmological model. For the sitcom, see The Big Bang Theory. For other uses, see Big Bang (disambiguation) … 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
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
red shift — ▪ astronomy displacement of the spectrum of an astronomical object toward longer (red) wavelengths. It is generally attributed to the Doppler effect, a change in wavelength that results when a given source of waves (e.g., light or radio waves)… … Universalium
Humason , Milton La Salle — (1891–1972) American astronomer Born in Dodge Center, Minnesota, Humason had no formal university training – in fact he began work as a donkey driver moving supplies to the Mount Wilson Observatory in southern California. Here he quickly… … Scientists
Hubble's constant — Astron. the ratio of the recessional velocity of galaxies to their distance from the sun, with current measurements of its value ranging from 50 to 100 km/sec per megaparsec. [1950 55; after E. P. HUBBLE] * * * Constant used to relate the… … Universalium
Messier 91 — Spiral Galaxy M91 Observation data (J2000 epoch) Constellation Coma Berenices Right ascension … Wikipedia
Rubin-Ford effect — The Rubin Ford effect is the observation of a dipole anisotropy in the recessional velocity of a sample of ScI galaxies. This anisotropy is different in magnitude and direction from that of the cosmic microwave background radiation, and suggests… … Wikipedia