Up to now, only twelve Apolloastronauts have stepped on to the moon. Since then, scientists have discovered how the moon was formed, why it has endless craters and why a thick layer of dust covers its surface.

Like all five-year old's, Melody couldn't wait to start school.She daydreamed about her teacher, who she knew would be the best teacher in the world!She imagined all the fun adventures she would have there with her best friend, Bree.Before her big first day at school arrived, however, Melody got cancer and her body became weak.On her birthday, Melody blew out her candles, and silently asked for something BIG and MAGICAL.What could Melody's wish be?

A journey to Mars or Saturn would be a dream come true for many astronauts. From launch pads, such as those at Baikonur, rockets lift off into space. How do astronauts move in zero gravity? Why do they wear spacesuits and what do they eat when in the spaceship?