What capabilities do astronauts need to have ? How to change the direction of anasteroid ? Unit error will crash thesatellite ? What will happen to the universe ? This time , the little scientist will take you to explore the celestial bodies in the universe , aerospace technology and the life of a great astronomer ! 100 things you don't know about the solarsystem , the Milkyway , the universe, the space station , the probes The mystery of allcharts ! 100 space themes that children and big friends can explore at will and at any time ! Little scientist , accompany you to travel millions of light years , land on distant planets , know astronomers and great discoveries!