Product Description
This item is a signed Time Magazine cover of Astronomer Edwin Hubble dated February 9, 1948. The item also includes an article with photos on Edwin Hubble....................PLEASE NOTE-THIS IS NOT THE COMPLETE MAGAZINE. THE ITEM FEATURES ONLYTHE COVER AND THE ARTICLE............................
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer. He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology. Hubble proved that many objects previously thought to be clouds of dust and gas and classified as "nebulae" were actually galaxies beyond the Milky Way. He used the strong direct relationship between a classical Cepheid variable's luminosity and pulsation period (discovered in 1908 by Henrietta Swan Leavitt) for scaling galactic and extragalactic distances. Hubble provided evidence that the recessional velocity of a galaxy increases with its distance from the Earth, a property now known as Hubble's law, although it had been proposed two years earlier by Georges Lemaître. The Hubble law implies that the universe is expanding. A decade before, the American astronomer Vesto Slipher had provided the first evidence that the light from many of these nebulae was strongly red-shifted, indicative of high recession velocities. Hubble's name is most widely recognized for the Hubble Space Telescope, which was named in his honor, with a model prominently displayed in his hometown of Marshfield, Missouri........PLEASE NOTE-THIS IS NOT THE COMPLETE MAGAZINE. THE ITEM FEATURES ONLY THE COVER AND THE ARTICLE............................BOTH AUTOGRAPH AND ARTICLE ARE IN EXCELLENT CONDITION.
