The measure of all things.

• Position: MATTERS OF SCALE - Chronology

The Measure of All Things Assumed distance of humanity from the 0 center of the Universe (Earth) in the time of Copernicus (1473-1543), kilometers Assumed distance of humanity from the ~149,000,000 center of the Universe (the Sun) in the time of Galileo (1564-1642), kilometers Current estimated distance from Earth 8,000 to the center of the Milky Way galaxy, light years Number of planets conceived of (in 7 Europe) in 1500 Estimated number of Earth-like planets ~3,000,000,000,000,000,000,000 in the universe in 2005 Number of species estimated by Linnaeus ~20,000 (1758) Number of species recorded today ~1,500,000 Estimated total number of species 4,000,000 to 100,000,000 Age of human species (homo sapiens ~130,000 sapiens), years Average age of a mammalian species at ~5,000,000 extinction Age of the horseshoe crab 300,000,000+ Age of the cyanobacteria 3,500,000,000+ Total biomass of humans, metric tons ~250,000,000 Total biomass of Antarctic krill ~500,000,000 Total biomass of oceanic cyanobacteria ~44,000,000,000 Estimated number of human cells in an 100,000,000,000,000 average human...