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
Mountains Beyond Mountains Health Organization, and largely supported financially by an American benefactor, Tom White. PART IV: A Light Month for Travel Follows Farmer from Haiti to Cuba, Paris, Russia, and other locations in his quest to treat infectious disease. PART V: O for the P In 2000, PIH learns it has been awarded a $45 million grant, by the Bill & Melinda Gates Foundation, to combat MDR-TB in Lima, Peru, along with other organizations. "O for the P" refers to an expression within PIH that is a shortened form of saying “a preferential option for the poor”. Mountains Beyond Mountains Mountains Beyond