From Space Exploration

Nauvis is the planet where the player crashes their spaceship and begins the journey, as such, it is considered the player's homeworld.

Nauvis in Space Exploration is a large but finite circular Planet, with a radius of 5692 tiles. The radius can be changed at the start of the game from 1423 tiles up to 10,000 tiles. However this alters multiple parameters, such as Gravity, CME, Core Miner and the amount of available resources on Nauvis. Furthermore, it will also proportionally change the radius of the Moons around Nauvis.

Nauvis has the same day night cycle and duration, as it does in Vanilla Factorio: 6.94mins or 416.66 seconds. By default it has 100% Solar value. This can not be changed.

Nauvis can only contain Vanilla resources and the player may adjust them at the start, such as Iron, Copper, Stone, Coal, Oil as well as a small amount of Uranium Ore. Nauvis can not contain any of the new SE resources and this can not be changed. However player may get Vulcanite Ore from Core Miner processing. Nauvis is also the only location where Core miner only yields universal Core Fragment.