книги Наука, техника, медицина Гуманитарные науки Общественные науки Социология Общая и теоретическая социология Социальные конфликты

Planetary nebula

Код 2327017

  • ISBN: 978-5-5105-4050-5

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Аннотация к книге "Planetary nebula"

High Quality Content by WIKIPEDIA articles! A planetary nebula is an emission nebula consisting of an expanding glowing shell of ionized gas ejected during the asymptotic giant branch phase of certain types of stars late in their life. This name originated with their first discovery in the 18th century because of their similarity in appearance to giant planets when viewed through small optical telescopes, and is otherwise unrelated to the planets of the solar system. They are a relatively short-lived phenomenon, lasting a few tens of thousands of years, compared to a typical stellar lifetime of several billion years.

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ISBN: 978-5-5105-4050-5

Книга находится в категориях

Биология Здравоохранение Основы медицины, учебная литература

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