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 expansion strategy based on various combinations of adjacency moves into areas away from, but related to, the core business, such as new product lines or new channels of distribution. This strategy is less risky than diversification; however, it can still create a substantial competitive advantage because the growth is based on or relates to the pack of skills that the business already does best. Zook bases his research on studying thousands of companies worldwide and interviewing CEOs of 25 top performers that have succeeded growing beyond theie core businesses. —Review by Product Development and Management Association Beyond the Core Beyond