I love Paul's Super Nova Galaxy photo- It was the first thing I thought of, too. There is the sense of awe, and wonderment. The shape and colors fit the ones on the PP video. With the recent release of Cosmos, there has been lots of press about astronomy to help name recognition. Those names would be easy to remember. Would "galaxy" be too close to "galatea" and be confusing"? Super Nova is my favorite of these.