a . “In 1933 the late Fritz Zwicky pointed out that the galaxies of the Coma cluster are moving too fast: there is not enough visible mass in the galaxies to bind the cluster together by gravity. Subsequent observations verified this ‘missing’ mass in other clusters.” M. Mitchell Waldrop, “The Large-Scale Structure of the Universe,” Science, Vol. 219, 4 March 1983, p. 1050.
b . Faye Flam, “NASA PR: Hype or Public Education?” Science, Vol. 260, 4 June 1993, pp. 1417–1418.
u “It turns out that in almost every case the velocities of the individual galaxies are high enough to allow them to escape from the cluster. In effect, the clusters are ‘boiling.’ This statement is certainly true if we assume that the only gravitational force present is that exerted by visible matter, but it is true even if we assume that every galaxy in the cluster, like the Milky Way, is surrounded by a halo of dark matter that contains 90 percent of the mass of the galaxy.” Trefil, p. 93.
u Gerardus D. Bouw, “Galaxy Clusters and the Mass Anomaly,” Creation Research Society Quarterly, Vol. 14, September 1977, pp. 108–112.
u Steidl, The Earth, the Stars, and the Bible, pp. 179–185.
u Silk, The Big Bang, pp. 188–191.
u Arp, Quasars, Redshifts, and Controversies.
u Halton M. Arp, “NGC-1199,” Astronomy, Vol. 6, September 1978, p. 15.
u Halton M. Arp, “Three New Cases of Galaxies with Large Discrepant Redshifts,” Astrophysical Journal, 15 July 1980, pp. 469–474.
c . A huge dust ring has been observed orbiting two galaxies. The measured orbital velocity of this ring allows the calculation of the mass of the two galaxies and any dark matter. There was little. Statistical analyses of 155 other small galactic groups also suggest that there is not enough dark matter to hold them together. [See Stephen E. Schneider, “Neutral Hydrogen in the M96 Group: The Galaxies and the Intergalactic Ring,” The Astrophysical Journal, Vol. 343, 1 August 1989, pp. 94–106.]
u Nadia Drake, “Dark Matter, Where Art Thou?” Science News, Vol. 181, 19 May 2012, pp. 5–6.