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This Concept Map, created with IHMC CmapTools, has information related to: BIG bang theory - Jeff Meilander, series of distance indicators; forerunner of the cosmic distance ladder allows Hubble to estimate distances to galaxies whose redshifts had already been measured, Hubble Space Telescope provided evidence for Lemaître's Big Bang theory, WMAP provided evidence for Lemaître's Big Bang theory, Georges Lemaître, Belgian physicist and Roman Catholic priest, independently derives Friedmann's equations and predicts recession of nebulae due to the expansion of the universe already showed this was expected given Cosmological Principle discovers correlation between distance and recession velocity —Hubble's law, Non-standard cosmological models proposed to explain Hubble's observations these included Oscillatory Universe proposed by Friedman, 1912 Vesto Slipher measured the first Doppler shift of a "spiral nebula" however he did not grasp the cosmological implications of his findings, COBE satellite provided evidence for Lemaître's Big Bang theory, Edwin Hubble measures great distance to nearest spiral nebulae demonstrating these systems were other galaxies also develops series of distance indicators; forerunner of the cosmic distance ladder, Non-standard cosmological models proposed to explain Hubble's observations these included Milne Model, 1912 Vesto Slipher measured the first Doppler shift of a "spiral nebula" 10 years later in 1922 Alexander Friedman derived the Friedmann equations from Albert Einstein's equations of general relativity, showing that the universe might be expanding in contrast to the static universe model advocated by Einstein, More data strengthened the theory with telescopic technology and satellites such as WMAP, Edwin Hubble measures great distance to nearest spiral nebulae demonstrating these systems were other galaxies then in 1927 Georges Lemaître, Belgian physicist and Roman Catholic priest, independently derives Friedmann's equations and predicts recession of nebulae due to the expansion of the universe, Georges Lemaître, Belgian physicist and Roman Catholic priest, independently derives Friedmann's equations and predicts recession of nebulae due to the expansion of the universe in 1949 Lemaître's Big Bang theory, Ralph Alpher and Robert Herman, predicted 1964: discovery and confirmation of the cosmic microwave background radiation by Arno Penzias and Robert Wilson, George Gamow, who introduced big bang nucleosynthesis advocated and developed Lemaître's Big Bang theory, Fred Hoyle in 1948 developed Steady state model, George Gamow, who introduced big bang nucleosynthesis whose associates were Ralph Alpher and Robert Herman,, Radio source counts provided evidence for Lemaître's Big Bang theory, Lemaître's Big Bang theory coined by Fred Hoyle, Hubble Deep Field Image provided evidence for Lemaître's Big Bang theory