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 Alps are also additional minor differences between the two book versions of the poem. For instance, "Life changed to landscape" becomes "Man changed to landscape." Lowell also made minor changes in punctuation. The editors of the "Collected Poems" note that Lowell's poem "Ovid and Caesar's Daughter," from his book "History", "is a revision of stanza three [from the version of "Beyond the Alps" in "For the Union Dead"". Lowell refers to: Beyond the Alps "Beyond the Alps" is a poem by Robert Lowell. According to Saskia Hamilton, the editor of Lowell's "Letters", Lowell wrote the original version of the poem in