Collins Night Sky

Collins Night Sky
Авторы книги: id книги: 1135211     Оценка: 0.0     Голосов: 0     Отзывы, комментарии: 0 310,76 руб.     (3,03$) Читать книгу Купить и скачать книгу Купить бумажную книгу Электронная книга Жанр: Природа и животные Правообладатель и/или издательство: HarperCollins Дата добавления в каталог КнигаЛит: ISBN: 9780007436170 Скачать фрагмент в формате   fb2   fb2.zip Возрастное ограничение: 0+ Оглавление Отрывок из книги

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An introductory guide to navigating your way around the night sky and identifying what you can see on any given night.Designed as a comprehensive introduction for the beginner and those who want to find out more, How to Identify the Night Sky covers everything that can be seen with the naked eye and binoculars, as well as what is visible using a small telescope.There are sections on how to observe and understand the objects that comprise the night sky, the moon, the movements of the stars and planets throughout the year and astronomical events.The constellations are given a comprehensive treatment. For each one there is a chart, a photograph, a description of its features and history, the best dates and times of visibility, the mythological representation and a list of interesting objects.

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Wil Tirion. Collins Night Sky

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Cover

Title Page

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We have already noted how the stars visible on any night slowly change throughout the year, new stars rising over the eastern horizon at dusk, as stars that have been visible for some months disappear beneath the western horizon. This change occurs because although our civil time is based on the Earth’s rotation, relative to the Sun, where one day equals 24 hours, relative to the stars, the Earth rotates once in 23 hours, 56 minutes, and 4 seconds. (The difference arises because of the Earth’s motion around the Sun, which means it has to rotate a little further to bring the Sun back into the same position in the sky.)

Steve Massey

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