Modern astronomy: expanding the universe by Lisa Yount

By Lisa Yount

Meet 12 women and men whose study and paintings in new applied sciences led to a revolution within the realizing of time and house throughout the twentieth century. From Edwin Hubble to George Gamow to Geoffrey Marcy, "Modern Astronomy" illuminates the lives and achievements of those leading edge scientists. Readers will achieve a transparent realizing of the typical threads that intertwine the astronomers' lives; the political, financial, and social occasions in their instances; individuals with whom they labored; and the advancements that preceded their examine. In-text sidebars spotlight each one subject's paintings. bankruptcy chronologies supply feedback for additional analyzing. the overall bibliography comprises listings of enterprises and internet assets.

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Modern astronomy: expanding the universe

Meet 12 women and men whose learn and paintings in new applied sciences caused a revolution within the knowing of time and house through the twentieth century. From Edwin Hubble to George Gamow to Geoffrey Marcy, "Modern Astronomy" illuminates the lives and achievements of those leading edge scientists. Readers will achieve a transparent realizing of the typical threads that intertwine the astronomers' lives; the political, monetary, and social occasions in their occasions; individuals with whom they labored; and the advancements that preceded their examine.

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The First Radio Telescope Professional astronomers showed no interest in Karl Jansky’s puzzling hiss, but one amateur astronomer felt differently. S. in engineering, asked Bell Laboratories for a job in the hope of working with Jansky. Jobs were scarce during the Great Depression, however, and Bell did not hire him. Instead, Reber went to work designing radio receivers for a manufacturer in Chicago. He vowed to follow up Jansky’s research in his spare time. In 1937, with the help of friends, Reber built a giant radio receiving antenna—essentially the first radio telescope—in his backyard in Wheaton, the same suburb of Chicago where Edwin Hubble had 40 Modern Astronomy spent his teen years.

Army 1919 Hubble is discharged from the army, returns to United States, and joins staff of Mount Wilson Observatory in August 1923 On October 5, Hubble makes photograph of Andromeda nebula (M31) containing what appears to be a Cepheid variable 1924 In February, Hubble confirms identification of Cepheid in M31 and uses the star to determine the nebula’s distance from Earth 1925 On January 1, scientific meeting hears Hubble’s paper proving that M31 and another spiral nebula lie outside the Milky Way and are probably independent galaxies 1926 Hubble devises classification system for galaxies 1929 On March 15, Hubble publishes paper showing that most galaxies are moving away from Earth and that the farther away they are, the faster they are moving GALAXIES GALORE 33 1930s Hubble extends redshift research to fainter and fainter galaxies, helps George Ellery Hale set up Mount Palomar Observatory, and becomes friends with movie stars and famous people 1931 Einstein thanks Hubble for restoring his faith in the original version of his general theory of relativity 1936 Hubble publishes Realm of the Nebulae 1938 Hubble wins Bruce Medal 1939 Hubble wins Benjamin Franklin Medal 1940 Hubble wins Gold Medal of Royal Astronomical Society 1940–45 Hubble calculates flight paths of artillery shells at Aberdeen Proving Ground 1948 Hubble becomes first astronomer to use Mount Palomar’s Hale Telescope 1953 Hubble dies of a stroke in San Marino, California, on September 28 Further Reading Books Bartusiak, Marcia, ed.

S. Army’s Ballistics Research Laboratory at the Aberdeen Proving Ground in Maryland, calculating the flight paths of artillery shells. 1-m) Hale Telescope finally went into operation on Mount Palomar in 1948, Hubble was the first astronomer allowed to use it. Sadly, he was not able to work with it for long. Hubble died of a stroke at age 63 in San Marino, California, on September 28, 1953. Just as George Ellery Hale had left a legacy of new telescopes with unimaginable power, Edwin Hubble left a heritage of puzzles for people using those telescopes to explore.

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