Fundamental Observational Problems

Abstract

Almost all of cosmology and extragalactic astronomy are built on the assumption that redshifts are caused by recession velocities and hence measure distances. Evidence has been accumulating since 1966, however, that high redshift quasars and other active objects violate this assumption and are associated with nearby, relatively low redshift galaxies (For recent reviews see Arp 1987; 1992a, 1994a,b and the present conference).