 After the break, how stargazing gave us science as we know it. That's just ahead on Living on Earth. Support for Living on Earth comes from friends of Smeagol the Seagull and Smeagol's Guide to Wildlife. It's all about the wildlife right next door to you. That's Smeagol, S-M-E-A-G-U-L-L, SmeagolGuide.org.