1. Jupiter has got 4 moons - Ganymede, Callisto, Europa and Io.
2. Temperature on the moon is very hot, about 100 degrees C°.
3. At night, the lunar surface gets very cold - minus 173 degrees C°.
4. Because the moon have been hit many, many times by asteroids and meteors.
5. The first person on the moon was American astronaute Nil Armstron on the 20th July 1969.
6. To colonize the nearest planet - Mars.