Planets
Every Spacy planet has three structural characteristics that never change: its class (which modulates mining output), its gravity (which weighs on fleet launch cost), and its rarity (purely cosmetic, which determines its visual appearance).
Planet classes
Each planet belongs to one of the three following classes, which directly influences the mining output of all your mines:
Gravity
Planet gravity impacts fleet launch cost: higher gravity means more fuel burned on takeoff. Allowed range: — to — g.
Planetary rarity
Each new planet rolls a rarity that determines its visual palette, the complexity of the texture and the special effects (rings, auroras, atmosphere). It is purely cosmetic: no statistic is affected. The natural distribution is:
Luck boosters
Luck boosters can be used at colonization to significantly improve your chances of getting a planet with a rare or exceptional appearance. Several booster tiers exist, each more powerful than the previous one — check your inventory to see which ones you have available.