Here is gude to space resources:
- Iron/Bauxite/Titanum Ore, CO2 Ice and Helium3 - must be placed on Moon, these are ones, that can be extracted on Moon.
- Organic Volatiles. On asteroid/KBO terrains or features.
- Metallic Asteroid. Metal-rich asteroid wherever in the solar system asteroids are found.
- Martian Blueberries. On Mars.
- Extraterrestrial Microbes. Wherever in the solar system (other than Earth) there might be microbial life.
- Xenoflora. Native plant life in planets outside the Solar System.
- Xenofauna. Native animal life in planets outside the solar system.
- Abandoned Civilization. In the galaxy, some long lost civilization.
- Abandoned Megastructure. The astroengineering ruins of some advanced civilization, outside the galaxy.
- Exotic Lifeforms. Things like space whales that are found near our beyond the edge of the observable universe.
- Quantonium Crystal. Not new but now it can be found outside the observable universe.
Lunar resources can be extracted, others just increase tile yields for now.
What terrain should I use for them? Sednoid, KBO or small moon?
KBO.
Sednoid and Small Moon are features like forest.
And here's the rest of the cosmos. Only thing preventing me of releasing the map is that Earth lacks bonuses as those take a bit to get the location right.
I would prefer if zones were stacked on each other like Solar System.
Also there is no need for blackholes in Interstellar, Local Group and Virgo cluster zone - they are unusable in these zones.
Red dwarfs should have two tiles so you can place star related improvement on it.
Sunlike star should be + shaped and cover 5 tiles like this:
---S
S S S
---S
Transtellar space has 8 different types of planet frastures and two types of star features.
Rogue planet should be far from stars, you can place it close to oort cloud on transtellar space zone.
Local Group shouldn't have any groups of galaxies, just single dots of Dwarf Galaxies.
You can place few normal Galaxy features too.
Only Virgo Cluster may have clumped galaxies and dwarf galaxies.
Observable Universe should have quasars closer at Unobservable Universe edges.
It should be placed on Observable Universe tiles.
Heres
guide.