December 2016 (Issue 363) This issue celebrates the educational initiatives from Tim Peake's Principia Mission this year featuring articles from the National Space Centre. From physical science demonstrations conducted aboard the ISS, what it was like to have live contact with the astronaut from school to practical activities to explain how satellites stay above the Earth. Other featured articles look at physics experiments with counter-intuitive outcomes, how to make a Microsco-pi and an inquiry-based science activity about climate change. This issue also introduces a four part series on optimal learning in schools.