The World panel on the right lists all the objects you have on your scene. By clicking on an object here, the Properties panel below displays this object properties. You can change the properties here by clicking on the one you want to modify.
O panel Universo lista todos os obxectos que ten na escena. Se preme alí nun obxecto, o panel Propriedades mostrará as propriedades dese obxecto. Pode modificar as propriedades premendo na que queira alterar.