This week we had guest Callum McAndrew who talked to us about dinosour fossils, space, stars and why astronauts wear nappies!
To see the sign lanuague of the planets we were talking about check out this video - BSL Astronomy: Planets of the Solar System - YouTube (names of the planets appear on screen when the sign lanuage is used for them).
Also to see more about Callums science festival use these links for facebook and twitter https://www.facebook.com/standengaged
