The distribution of galaxies is clumpy on all scales, ranging from binaries, triples, and multiples, through groups containing a few and a hundred galaxies, to rich clusters with thousands of members, masses up to 1015±1M☉, and diameters of the order of 10 Mpc. The latter have been discussed by Neta A. Bahcall in a preceding volume of this series. The clusters are at the end of the scale of the more or less regular structures in the Universe.
Jan OortRelated topics
clumpy containing distribution end few hundred latter less mass order ranging regular rich scale series universe volume scales mpc neta triplesRelated quotes
I love to read the dedications of old books written in monarchies-for they invariably honor some (usually insignificant) knight or duke with fulsome words of sycophantic insincerity, praising him as the light of the universe (in hopes, no doubt, for a few ducats to support future work); this old practice makes me feel like such an honest and upright man, by comparison, when I put a positive spin, perhaps ever so slightly exaggerated, on a grant proposal.
Stephen Jay Gould
How important can it be that I suffer and think? My presence in this world will disturb a few tranquil lives and will unsettle the unconscious and pleasant naiveté of others. Although I feel that my tragedy is the greatest in history - greater than the fall of empires - I am nevertheless aware of my total insignificance. I am absolutely persuaded that I am nothing in this universe; yet I feel that mine is the only real existence.
Emil Cioran
Those who can bring themselves to renounce wealth, position and power accruing from a social system based on violence and putting a premium on acquisitiveness, and to identify themselves in some real fashion with the struggle of the masses toward the light, may help in a measure - more, doubtless, by life than by words - to devise a more excellent way, a technique of social progress less crude, brutal, costly and slow than mankind has yet evolved.
A. J. Muste
Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer, either by its own nature, or by accidental heat. And it is not to be thought that light bodies are escaping to the surface of the universe while they are carried upwards, or that they are not attracted by the earth. They are attracted, but in a less degree, and so are driven outwards by the heavy bodies; which being done, they stop, and are kept by the earth in their own place.
Johannes Kepler
The existing and long-standing use of the word 'evolution' in our state's textbooks has not adversely affected Georgians' belief in the omnipotence of God as creator of the universe, There can be no incompatibility between Christian faith and proven facts concerning geology, biology, and astronomy. There is no need to teach that stars can fall out of the sky and land on a flat Earth in order to defend our religious faith.
Jimmy Carter
