Edwin Hubble Edwin Hubble 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 and is regarded as one of the most important astronomers of all time. Hubble discovered 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
Beyond Capricorn in "The Globe" in 2009, Robert J. King refers to "Beyond Capricorn", arguing that Jave la Grande is a theoretical construction, an artifact of 16th century cosmography. He points out that the geographers and map makers of the Renaissance struggled to bridge the gap from the world view inherited from Graeco-Roman antiquity, as set out in Claudius Ptolemy's "Geography", and a map of the world that would take account of the new geographical information obtained during the Age of Discoveries. The Dieppe world maps reflected the state of geographical knowledge of their time, both actual and theoretical. Accordingly, Java Major,