Corrections to Programme Content

Below are corrections to our programme content based on reader feedback, space news or new science that has come to light since publication. Corrections are shown in bold.

Where possible we will update and replace website content with these new corrections as they come to light. For content in our printed books we will list updates below and ensure revised editions carry these changes.

We welcome feedback from readers. Please email if you spot any errors.

Deep Space Diary

Activity 1.1 Ancient Astronomy

Background to this Activity
Our Solar System is made up of eight planets, five dwarf planets (Ceres, Pluto, Eris, Humea and Makemake), over 200 moons, and millions of comets, asteroids and meteors.