The ideal gift for all amateur and seasoned astronomers. This is the ideal resource for beginners and experienced stargazers in the United States and Canada, and has been updated to include new and practical information covering events occurring in North America's night sky throughout 2025.

The ideal gift for all amateur and seasoned astronomers. “This is a great guide to the night sky at a great price”Astronomy Now “A handy and straightforward guide.” British Astronomical Association's 'Journal' “an ideal Christmas stocking-filler” The Observatory

How long does it take light from the Sun to reach Earth? What do we call one millionth of a billionth of a second? What animals change colour in different seasons? And why is Greenwich the Home of Time? Find the answers to these and many more fascinating questions in this timely little book from the Royal Observatory Greenwich, the 'Home of Time'.

Now containing material on molecular clouds, binaries, star clusters and the stellar initial mass function (IMF), disk evolution and planet formation, this new edition is a comprehensive account of the underlying physical processes of accretion for graduate students and researchers.