I just finished my first bigger exploration trip. I was maybe 800 LY away from the civilization. Initially I was going to travel to Sagittarius A, but then I realized that it is a looong trip, and I returned home and collected 2.5 million credits (tens of first explorer rewards). Somehow it seemed that most solar systems are quite similar to each other, there are just some variations. However, I've read that some explorers have found very interesting systems. Is there more variation when you get further, or do you just have to explore a lot of systems to find something special?