I found this when i was looking through the options, on the page where you can change the properties of blocks. The is a folder labelled death star, with one block inside it, called the death star core. i have no idea what it does, but i think there is a giant death star that spawns in a certain secter. My guess is that it plays on the look of a planet, as in the film, but don\'t take my word that any of this actually exist, and that it is just a random block with this name to troll us.