This is a

WHAT  MATTERS  FACTOID



"THE STRUCTURE OF THE PHYSICAL WORLD IS MANIFESTED ON MANY DIFFERENT SCALES, RANGING FROM THE UNIVERSE ON THE LARGEST SCALE, DOWN THROUGH GALAXIES, STARS AND PLANETS, TO LIVING CREATURES, CELLS AND ATOMS....

... THE SIZE OF A PLANET IS THE GEOMETRIC MEAN OF THE SIZE OF THE UNIVERSE AND THE SIZE OF AN ATOM;
THE MASS OF MAN IS THE GEOMETRIC MEAN OF THE MASS OF A PLANET AND THE MASS OF A PROTON."

CARR, B.J., and M.J. REES: "The Anthropic Principle and the Structure of the Physical World",
NATURE, vol. 278 (April 12, 1979), pp.605-612

    small GIF     (perhaps we could call this one a 'perhapsoid')



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