edmund halley Definition

edmond halley, tycho brahe, harlow shapley, percival lowell, christiaan huygens, fred hoyle, carl friedrich gauss, edwin hubble, geometer, satyendra nath bose, hipparchus, eclipsing binary, benoit mandelbrot, heliocentric, heinrich hertz, robert hooke, jean francois champollion, johannes kepler, eratosthenes, phaethon, armillary sphere, nicolaus copernicus, george gamow, epimetheus, leonardo fibonacci, horsehead nebula, camelopardalis, albert michelson, eridanus, richard feynman, democritus, erwin schrodinger, geocentric, relativity theory, georges cuvier, galileo galilei, niels bohr, celestial mechanics, louis agassiz, leonhard euler, astronomical telescope, astrometry, henri becquerel, cepheus, magnetic monopole, photometry, niepce, jovian, wolfgang pauli, andromeda galaxy, circinus, bernhard riemann, anaxagoras, superstring, aristarchus, r. buckminster fuller, alexandre gustave eiffel, proxima centauri, feynman, norbert wiener, astron, airglow, celestial sphere, empedocles, radioastronomy, ludwig boltzmann, anton van leeuwenhoek, pierre teilhard de chardin, john bardeen, syrtis major, sidereal, pythagoras, eugene wigner, astronomer, saturnian, guglielmo marconi, venusian, clavius, lunik, archimedes, geomagnetism, kurt godel, blaise pascal, francesco petrarca, lavoisier, extragalactic, galilei, hubble, filippo brunelleschi, archaeo, gregor mendel, philae, trifid, galois, uranian, anders celsius, leeuwenhoek, sir francis galton, leo esaki, triangulum,