Rockets don't really explore space-they are only used to launch a spacecraft into space or send it back to earth. Most rockets are not reusable they burn up in space after just one use, but some newer rockets can be used again & again. It only take about 10 minutes for a rocket to launch a spacecraft from earth to space! But, that short ride takes a lot of fuel and energy! The Chinese made a fist rocket over a thousand years ago; they were actually firework missiles used to defend against an invasion. 2 x "AA" 1.5V batteries included. Contents: 1 x space rocket, 2 x astronauts, 1 x junior rover.