Contains 250 questions and answers about astronomy, particular for the amateur astronomer.

Discusses the relationship between the earth and the sun.

Listing more than 500 sky targets, both near and far, in 187 challenges, this observing guide will test novice astronomers and advanced veterans alike. Its uniq

In this original, wide-ranging, and endlessly thought-provoking work of popular nonfiction, a leading science writer uncovers the pervasive presence of shadows

Provides answers to questions about the seasons, rivers, deserts, volcanoes, oceans, icebergs, moon, stars, planets, and space. An activities section is include