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• Stellar Metamorphosis: Gliese 433
  ...in different stages of metamorphosis, a red dwarf, a grey dwarf and a blue dwarf/water world.</span>
  18 KB (2,041 words) - 11:06, 1 January 2017
• Gravitational redshift
  [[File:Gravitational red-shifting2.png|thumb|200px|The gravitational redshift of a light wave as it ...e is a corresponding reduction in energy when electromagnetic radiation is red-shifted, as given by [[Planck's relation]], due to the electromagnetic radi
  22 KB (3,270 words) - 20:15, 4 February 2018
• Hubble Deep Field
  ...ometre|nm]] (near-[[ultraviolet]]), 450&nbsp;nm (blue light), 606&nbsp;nm (red light) and 814&nbsp;nm (near-[[infrared]]). Because the [[quantum efficienc ...ths at which the images were taken do not correspond to the wavelengths of red, green and blue light, the colours in the final image only give an approxim
  33 KB (4,612 words) - 12:32, 5 February 2018
• Centaurus A
  The bulge of this galaxy is composed mainly of evolved red stars.<ref name="carnegieatlas" /> The dusty disk, however, has been the s ...ermal runaway|runaway]] thermonuclear reaction, as may happen when a white dwarf in a [[binary star]] system strips gas away from the other star. SN 1986G w
  29 KB (4,015 words) - 12:30, 5 February 2018
• Sloan Digital Sky Survey
  ...an [[redshift]] of ''z''&nbsp;=&nbsp;0.1; there are redshifts for luminous red galaxies as far as ''z''&nbsp;=&nbsp;0.7, and for [[quasar]]s as far as ''z ...lisher=Sdss3.org |accessdate=2011-08-14}}</ref> APOGEE will survey 100,000 red giant stars across the full range of the [[galactic bulge]], bar, disk, and
  25 KB (3,589 words) - 12:34, 5 February 2018
• Non-standard cosmology
  ...an extremely successful model, but retains some weaknesses (such as the [[dwarf galaxy problem]]). Research on extensions or modifications to Lambda-CDM, a ...mples'', Astrophys. J. 465-484</ref><ref name="Arp 1998">Arp, H., ''Seeing Red, Redshifts, Cosmology and Academic Science'', 1998</ref> Skepticism and alt
  41 KB (6,072 words) - 19:16, 4 February 2018