Название: The Sun (Early Bird Astronomy) Автор: Laura Hamilton Waxman Издательство: Lerner Pub Group ISBN: 0761338713 Год: 2010 Формат: PDF Страниц: 50 Размер: 23,5 МБ Язык: Английский
Introduces the sun, including information on its composition, the solar cycle, sunspots, and how it has been studied through history.