Astroneer headcanons:
Atrox: -smells bad -just bad in general -about the size of mercury -most geologically active out of all the planets -atmosphere is full of radioactive ash from volcanoes
Calidor: -the largest terrestrial planet in the system -incredibly strong magnetic field -also a former ocean planet, but got too close to the sun and the water dried up -atmosphere is boiling water vapor -the few plants that do survive use halobacteria and contain carotenoids
Sylva: -forests use halobacteria like those on vesania -rich in salt -formerly covered with oceans, but those dried up
Desolo: -fluoride atmosphere -about the size of pluto -formerly a dwarf planet
Vesania: -similar to earth in size and biodiversity -small oceans full of algae -plants use halobacteria instead of clorophyll
Novus: -incredibly humid -atmosphere is constantly clouded in water vapor -approx. the size of mars -retrograde orbit
Glacio: -surface glaciers are comprised of frozen nitrogen -faint water-ice rings -the soil beneath the glaciers is full of iron -orbits a neptune-like planet -pockmarked with craters  -2nd largest planet -geologically active, glaciers are constantly shifting -grasses on the surface contai anthocyanidins -massive fungi exist near the core
