Annual.

Includes index.

2014 edition includes "Animate this" free app.

2015 edition includes "Animate this" free app and "See it in 3D".

2017 edition includes interview with Chris Hadfield, Canadian astronaut.

Editor-in-chief up to 2005 ed.: Claire Folkard ; 2006 ed. to present: Craig Glenday.

2013 edition published in 2012 and includes 3-D photography.

2005 ed. is the Special 50th anniversary ed.

2000 ed. is the Millenium ed.

2009 edition includes 3-D photography.

2006 to 2009 editions include a giant fold-out feature pages.