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#1 New York Times bestselling author Dava Sobel returns with the captivating, little-known true story of a group of women whose remarkable contributions to the burgeoning field of astronomy forever changed our understanding of the stars and our place in the universe   In the mid-nineteenth century, the Harvard College Observatory began employing women as calculators, or “human computers,” to interpret the observations made via telescope by their male counterparts each night. At the outset this group included the wives, sisters, and daughters of the resident astronomers, but by the 1880s the female corps included graduates of the new women's colleges—Vassar, Wellesley, and Smith. As photography transformed the practice of astronomy, the ladies turned to studying the stars captured nightly on glass photographic plates. The “glass universe” of half a million plates that Harvard amassed in this period—thanks in part to the early financial support of another woman, Mrs. Anna Draper, whose late husband pioneered the technique of stellar photography—enabled the women to make extraordinary discoveries that attracted worldwide acclaim. They helped discern what stars were made of, divided the stars into meaningful categories for further research, and found a way to measure distances across space by starlight. Their ranks included Williamina Fleming, a Scottish woman originally hired as a maid who went on to identify ten novae and more than three hundred variable stars, Annie Jump Cannon, who designed a stellar classification system that was adopted by astronomers the world over and is still in use, and Dr. Cecilia Helena Payne-Gaposchkin, who in 1956 became the first ever woman professor of astronomy at Harvard—and Harvard’s first female department chair. Elegantly written and enriched by excerpts from letters, diaries, and memoirs, The Glass Universe is the hidden history of a group of remarkable women who, through their hard work and groundbreaking discoveries, disproved the commonly held belief that the gentler sex had little to contribute to human knowledge.

When Uncle Scrooge loses some important papers in a plane crash in the jungles of Hondorica, he sends Donald and his nephews to retrieve them. But smug cousin Gladstone Gander gets wind of the expedition and decides to get to Scrooge’s papers first — and claim the reward for himself! Angel Sanctuary: Of Mushrooms and Boys download ebook pdf Then, Donald takes Huey, Dewey, and Louie to visit an abandoned Western town — at least it was supposed to be abandoned. It’s up to the plucky nephews to puzzle out the mystery behind “The Ghost Sheriff of Last Gasp.” And when Donald is made stationmaster for a tiny out-of-the-way railroad stop, his first delivery is 10,000 baby turkeys — and they’re all hungry! "Calaveras "grotesque yet lively images of costumed skeletons represent a traditional aspectof the Mexican holiday known as the Day of the Dead, when people celebrate the memories of departed loved ones. This compilation of 187 multi-character prints and spot illustrations was drawn from a variety of authentic sources, including many works by Jose Guadalupe Posada (1852 1913), Mexico's most illustrious graphic artist. Posada took the "calaveras" custom to new heights, transforming the cavorting skeletons into imaginative expressions of social and political satire.

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Author: Dava Sobel
Number of Pages: 324 pages
Published Date: 06 Dec 2016
Publisher: VIKING
Publication Country: United States
Language: English
ISBN: 9780670016952
Download Link: Click Here
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