Refractory Telescopes (3:47); Reflecting Telescopes (2:37); Large Telescopes (3:02); Summary (2:09); Credits: How Do Telescopes Work? (0:40);
The Origins of the Solar System (3:19); The Solar System (4:56); The Future of the Solar System (1:47); Summary (2:15); Credits: The Solar System (0:39);
About the Sun (2:57); The Sun's Energy (2:03); The Sun and the Earth (2:30); The Sun and Life (2:46); Summary (2:31); Credits: The Sun, Source of Energy and Life (0:34);
Comets (3:59); Origin and Evolution of Comets (1:32); Halley's Comet (4:40); Summary (1:49); Credits: What Are Comets? (0:39);
The Stars (4:39); The Sun (2:21); Kinds of Stars (2:18); Summary (2:58); Credits: What Are Stars? (0:39);