How many stars are there? How do we count them? Why do stars twinkle? Anika and Esther find out all the celestial facts about stars with Dr Tanya Hill who is an astronomer at the Melbourne Planetarium at Scienceworks.   Enjoy a new episode every fortnight, and if YOU have a big Fact Detective question, send it to [email protected]    Guest: Dr Tanya Hill who is an astronomer at the Melbourne Planetarium at Scienceworks. Hosts: Anika and Esther  Production: Cinnamon Nippard  Sound design: Josh Newth  Executive Producer: Lorna Clarkson    Hear it first on LiSTNR.    Listen ad-free on Kinderling.   See omnystudio.com/listener for privacy information.