Ive got some ideas for new planets and systems but do not know how you say about the terrain of the planet or how big it is or if its breathable and so on I looked at some that others have done and the terrain is done like this
Planet: 7 by 8 or somthing (sorry if it makes no sense but its just a crude example)
Ack... yea, IE is not a fan of the Combine. We suggest you use Firefox because frankly, it's just nicer and poses few problems than IE.
Of course the designer is not necessary. You can just use your imagination and write it out based on the dimensions of the planet you are creating. The type of terrains allowed on a certain planet type and the letter it represents are listed in that sticky. Please use lower case though.