>>717406031
You can find geological formations (steam, water, ice and magma geysers mostly) and biological organisms, plus the new plants and fungus. Other than that and the occasional interesting land configuration there's nothing else really on them if they're not populated. Once Odyssey came out they increased the amount of random stuff you can find on them, like crash sites, wreckage, pirate stockpiles and small structures, but those aren't static.