Perspectives
No sign of gravitational lensing in the ., WFPC2, HST, NASA ., WFPC2, HST,
cosmic microwave et al background
Ron Samec ravitational lensing is a Ggravitational-optical effect whereby a background object like a distant quasar is magnified, distorted Andrew Fruchter (STScI) Image by and brightened by a foreground galaxy. It is alleged that the cluster of galaxies Abell 2218, distorts and magnifies It is one of the consequences of general light from galaxies behind it. relativity and is so well understood that fectly smooth black body spectrum of sioned by Hoyle and Wickramasinghe it now appears in standard optics text 5,6 books. Objects that are too far to be 2.725 K with very tiny fluctuations in and by Hartnett. They showed that seen are ‘focused’ by an intervening the pattern on the 70 μK level. These a homogeneous cloud mixture of car- concentration of matter and bought ‘bumps’ or patterns in the CMB are bon/silicate dust and iron or carbon into view to the earth based astronomer. supposedly the ‘seeds’ from which whiskers could produce such a back- One of the most interesting photos of the galaxies formed. Why is it so ground radiation. If the CMB is not the effects of gravitational lensing smooth? Alan Guth ‘solved’ this puz- of cosmological origin, all the ad hoc ideas that have been added to support is shown in the HST image of Abell zle by postulating that the universe was the big bang theory (like inflation) 2218 by Andrew Fruchter1 (Space originally a very tiny entity in thermal fall apart. telescope Science Institute) et al., equilibrium. It ‘inflated’ from about -35 -24 Thus the CMB may not be the with the WFPC2 camera,2 on the 10 to 10 seconds after the big bang ‘whimper’ of the big bang, but just a Hubble Space Telescope (NASA) (see at many times the speed of light and rather homogeneous but dirty expul- illustration). In this image, the cluster then it began its ordinary expansion. sion of a nearby supernova.7 of galaxies, Abell 2218 is distorting The largest foreground concentra- tions of matter in the universe, which and magnifying light from galaxies References behind it. They appear as ring arcs of cause appreciable gravitational lens- faint light. This cluster is about three ing, are galactic clusters. The WMAP 1.
JOURNAL OF CREATION 20(2) 2006