![]() Not for nothing is he called the Father of Cosmology.Īnd when he talked in his authoritative voice, one of his students said it was like hearing God speak.Īnd, yes, Edwin P. With this discovery, Edwin Hubble altered the thinking of what the universe was, and where it was going. ![]() In an environment of academic jealousies (that seemed almost as large as the universe itself), Hubble assumed the risky position of declaring that those big spirals he glimpsed were hurtling away from the Earth at great speeds, that in fact the universe was not static, but a mass moving at warp velocity. He called it, naturally, Hubble’s Law, which clarified the rate the universe expanded in all directions. The red glint in faint light wavelengths gave him the notion of a powerful force moving at tremendous speeds and that the more distant the nebulae, the faster they moved away from Earth.Įdwin Powell Hubble was a sky walker, a cruiser of far-off galaxies whose brilliance and curiosity led to his discovery of the fundamental structure of something as large as the universe.Īt the time he arrived at this startling idea, he was a brilliant 30-something, explaining mysteries of the universe and how it works. The SAO/NASA Astrophysics Data System.Even before the Big Bang theory of the universe came into vogue, Edwin Hubble talked of "nebulae" swirling at great distances from Earth, with stars so far away, they appeared as thin mist in his telescope. Monthly Notices of the Royal Astronomical Society, 97, p513. ↑ Red-shifts and the distribution of nebulae, Hubble, Edwin 1937.↑ Effects of red shifts on the distribution of nebulae, Hubble, Edwin 1937.Edwin Hubble 1889–1953, The Journal of the Royal Astronomical Society of Canada, Vol. 'Slipher's redshifts as support for de Sitter's model and the discovery of the dynamic universe' In Origins of the Expanding Universe: 1912–1932. "Lost in translation: Mystery of the missing text solved". ↑ Eugenie Samuel Reich Published online 27 June 2011| Nature| doi: 10.1038/news.2011.385."… if redshifts are velocity shifts which measure the rate of expansion, the expanding models are definitely inconsistent with the observations that have been made … expanding models are a forced interpretation of the observational results" Hubble himself did not see his 1929 data as evidence for an expanding Universe. This discovery lead to the notion of the expanding universe which is the centre-piece of the cosmology of the present day. ![]() The linear velocity-distance relation was established.The distribution of galaxies was found to be homogeneous in distance (the galaxies were all over the universe, not in any particular location).Hubble settled decisively the question of the nature of the galaxies (as being other things like the Milky Way).A classification system for nebulae, both galactic (diffuse) and extragalactic (both nebulae inside our Milky Way galaxy, and other galaxies outside it).The Hubble Space Telescope was named after Hubble.įour major achievements Īccording to Sandage, Hubble achieved four main things: Some have incorrectly said that Hubble discovered the Doppler shift in the spectra of galaxies, but this had already been observed earlier by Vesto Slipher, whose data Hubble used. This work helped to establish that the universe is expanding. Light traveling through stretching space experiences a Hubble-type redshift. Today, the 'apparent velocities' of galaxies are understood as an increase in proper distance which occurs due to the expansion of space. Nevertheless, the idea bears Hubble's name to this day. Georges Lemaître, a Belgian priest and astronomer, had published the idea two years before in an obscure journal. The law states that the greater the distance between any two galaxies, the greater their relative speed of separation. In 1929 Hubble formulated what is called Hubble's law. Redshift is observed in the light spectrum Doppler effect is the change in pitch or colour when an object or sound comes in (higher pitch, brighter color) or moves away (lower and darker). Hubble found the degree of Doppler effect ( redshift) from a galaxy increased in proportion to its distance from Earth. Then he proved the galaxies were moving away from each other. Also, he developed a method for classifying galaxies. In 1925 he showed that there are galaxies beyond our own, the Milky Way. Hubble's findings changed the scientific view of the universe. Wavelength increases up towards the red and beyond (frequency decreases).Įdwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer. Absorption lines in the optical spectrum of a supercluster of distant galaxies (right), as compared to absorption lines in the optical spectrum of the Sun (left).
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