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 the Core Beyond the Core Beyond the Core: Expand Your Market Without Abandoning Your Roots is a non-fiction book by American business consultant Chris Zook. This is the second book in his "Profit from the Core" trilogy, followed by "Unstoppable" released in 2007. "Beyond the Core" argues that businesses must grow to survive—but only one in five strategies for growth succeeds. In the previous book, "Profit from the Core", Zook explains how to grow profitably by concentrating on and harvesting the full potential in the core business. But if the core business fails to provide new growth, managers should stick to an