Spore Hero Arena How to change planet

Ive looked on lotsa sites, its probably really obvious but can someone help, kupo?

 

When you're in the ship interact with the computer at the bottom-right corner (Near the alien)

 

Do you mean, from one planet to another? go to the ship computer in the bottom right corner of your ship near the old alien dude, choose "Space Travel" and drag your stylus across the screen from the planet you are currently on, to the one you want to go to (Beware of the battery at the bottom, it limits how far you can travel)