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  • ...nal |last=Tifft |first=W. G. |date=2006 |title=Redshift periodicities, The Galaxy-Quasar Connection |journal=[[Astrophysics and Space Science]] |volume=285 | ...uantization in excess of what is expected due to [[selection effect]] or [[galaxy cluster|galactic clustering]].<ref>{{cite journal |last1=Trimble |first1=V.
    22 KB (3,040 words) - 20:16, 4 February 2018
  • ...of proportionality (Hubble constant) between the 'proper distance' D to a galaxy and its velocity v <math display="inline">...</math> [ <math display="inli ...decrease with distance. Combine this with a relative motion away from this filament by the earth (either or both could be moving), perhaps analogous to the con
    21 KB (3,120 words) - 15:39, 14 August 2018
  • [[Image:Arp87full.jpg|thumb|300px|Colliding [[spiral galaxy]] pair [[NGC 3808]]A and NGC 3808B (Arp 87).]] ...24).jpg|thumb|300px|[[NGC 6621]]/[[NGC 6622]] (Arp 81), a pair of [[spiral galaxy|spiral galaxies]] 100 million years after their colliding.]]
    76 KB (10,108 words) - 13:04, 4 February 2018