Titlebook: Galactic Encounters; Our Majestic and Evo William Sheehan,Christopher J. Conselice Book 2015 Springer Science+Business Media New York 2015

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,“I Have Looked Farther....”,nebulae in the 18th century. At the time he began, the nebulae—catalogued by Messier only to save time in eliminating them as comet suspects—were hieroglyphs of the universe, which no one had a clue how to decipher. Herschel left a field having at least begun to ask the right questions.

Juvenile

Chimneys and Tubules of the Galaxy, command of George III, and began to receive orders for seven-foot refl ectors similar to the one he had used to discover the “Georgian,” eventually producing two hundred of this model alone, on a commercial basis, many to royalty and foreign dignitaries and wealthy amateurs, but at least a few to o

Gleason-score

Of Leviathans, Spirals, and Fire-Mists,pes in existence. Th e greatest of all was the 40-foot, with its 48-inch mirror, at Slough. But here William overreached. A glorious failure, difficult, even dangerous, to use, it was never deployed for the study of the nebulae for which it was designed. But it inspired an even more colossal instrum

Prosaic

The Various Twine of Light,lthy Liverpool brewer who had visited Rosse’s workshops in Parsonstown in 1844 and had partly witnessed the six-foot refl ector’s erection, set to building a grinding machine and polishing machine similar to (but improving upon) those Rosse had used, and constructed a 24-inch refl ector, mounted equ

macabre

The Nebula Is Leaving the Solar System,as funded by the late eccentric California real estate speculator James Lick. It was there, as we have seen, that E. E. Barnard began the wide-angle photography of the Milky Way. It was no accident, by the way, that California would become not only the premier location for astronomy but also for the

侵略者

,The “Galactocentric” Revolution,ry, when it was surpassed by the 60—inch refl ector—called the first “modern” telescope—of Mt. Wilson Observatory.1 By the century’s end, the distinction of the world’s largest telescope would be shared by two giant refl ectors, Keck 1 and Keck 2, on Mauna Kea in Hawaii, with mirrors 394 inches (10.

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