Modern astronomy: expanding the universe by Lisa Yount

By Lisa Yount

Meet 12 women and men whose examine and paintings in new applied sciences led to a revolution within the figuring out of time and area 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 knowing 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 learn. In-text sidebars spotlight every one subject's paintings. bankruptcy chronologies supply feedback for additional interpreting. the final bibliography contains listings of businesses and net assets.

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Optimistically, he sent his family to California in October 1903. He returned there himself in December, even though he had just learned that the Carnegie Institution had turned him down. Mount Wilson Develops In early 1904, Hale set up a small solar research station on Mount Wilson and began doing research there. He also reapplied to the Carnegie Institution, and this time his optimism was better placed. MORE LIGHT 11 The institution granted him $10,000 in April and promised to consider giving him a larger amount in December.

A nova would not act that way, Hubble knew, but such changes would be typical for another type of star, called a Cepheid variable. Hubble was excited to find a possible Cepheid in M31 because astronomers about a decade earlier had developed a way to use Cepheids as “yardsticks” to determine the distance from Earth of the star formations in which the Cepheids were embedded. If the star in M31 really was a Cepheid, therefore, Hubble could use it to find out how far away the nebula was. Harlow Shapley, head of the Harvard Observatory, had recently calculated (also using Cepheids) that the Milky Way was 300,000 light-years across, so determining the distance to M31 would show whether or not the nebula was within the Milky Way.

Also became a radio engineer. The Jansky family moved to Madison, Wisconsin, when Karl was three years old. Cyril Jansky joined the faculty of the University of Wisconsin in that city, and Karl earned a bachelor of science degree in physics, with honors, from the same university in 1927. ) Soon after his graduation, Karl Jansky applied to Bell Laboratories for a job, but the company was reluctant to hire the young man at first because Jansky suffered from lifelong kidney disease. Fortunately, Karl’s engineer brother knew people in the laboratory’s personnel department and persuaded them that Karl would be a dependable employee.

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