Episode: 1 Why is the sky blue? Episode: 2 What can we see moving in the sky? Episode: 3 What's so special about the earth Episode: 4 Are the seasons and days the same everywhere? Episode: 5 How was the sun born? Episode: 6 Does the sun really send us its rays? Episode: 7 How did the moon get where it is? Episode: 8 Why does the moon have a constantly changing hidden face and visible face? Episode: 9 How does an eclipse work? Episode: 10 How are planets born? Episode: 11 Why do the planets orbit around the Sun? Episode: 12 Which is closest planet to the sun? Episode: 13 Which is the first star we see at night? Episode: 14 Is Mars similar to Earth? Episode: 15 Is there life on Mars? Episode: 16 Which is the largest planet? Episode: 17 Does Jupiter have many satellites? Episode: 18 Is Saturn similar to Jupiter Episode: 19 What are the rings around Saturn and its satellite Titan? Episode: 20 Why do we talk less of Uranus and Neptune than the other planets? Episode: 21 Which planet is furthest from the sun? Episode: 22 Are asteroids Planets? Episode: 23 Why do comets have tails? Episode: 24 Should we be afraid of meteorites? Episode: 25 How does a rocket work? Episode: 26 How long has man been travelling in space? Episode: 27 How does a space probe work? Episode: 28 What are artificial satellites for? Episode: 29 How do we live in space? Episode: 30 How do we look at space? Episode: 31 Can anyone study astronomy? Episode: 32 What is a light year? Episode: 33 What are the signs of the zodiac? Episode: 34 How are stars born? Episode: 35 How do stars die? Episode: 36 What is a black hole? Episode: 37 How was the universe born? Episode: 38 How many stars are there in the Universe? Episode: 39 Do Aliens exist? Episode: 40 What will be space travel in the future? Episode: 41 Episode 41 Episode: 42 Episode 42 Episode: 43 Episode 43 Episode: 44 Episode 44 Episode: 45 Episode 45 Episode: 46 Episode 46 Episode: 47 Episode 47 Episode: 48 Episode 48 Episode: 49 Episode 49 Episode: 50 Episode 50 Episode: 51 Episode 51 Episode: 52 Episode 52 Episode: 53 Episode 53 Episode: 54 Episode 54 Episode: 55 Episode 55 Episode: 56 Episode 56 Episode: 57 Episode 57 Episode: 58 Episode 58 Episode: 59 Episode 59 Episode: 60 Episode 60 Episode: 61 Episode 61 Episode: 62 Episode 62 Episode: 63 Episode 63 Episode: 64 Episode 64 Episode: 65 Episode 65 Episode: 66 Episode 66 Episode: 67 Episode 67 Episode: 68 Episode 68 Episode: 69 Episode 69 Episode: 70 Episode 70 Episode: 71 Episode 71 Episode: 72 Episode 72 Episode: 73 Episode 73 Episode: 74 Episode 74 Episode: 75 Episode 75 Episode: 76 Episode 76 Episode: 77 Episode 77 Episode: 78 Episode 78 Episode: 79 Episode 79 Episode: 80 Episode 80