From Steve Cariddi and the Planetary Society, the 2015 Year in Space calendar is as stunning and informative as ever. Each month has a theme that is illustrated by gorgeous colour images and explored with easy-to-digest historical and factual information. But it’s the daily tidbits that makes this calendar a must-have for space fans. In addition to the typical reminders of national holidays are daily illustrations of the phases of the Moon, information on where to see planets in the sky, and notices about where in the world you can see interesting celestial phenomena like eclipses. But my personal favourite feature about this calendar is the space history tie-ins. Almost every day has at least one “this day in space” listed, which means you’ll never forget your favourite rocket pioneer’s birthday again.