Mars

Gravity	3.71 m/s² (a little over a third of Earth's)
Arrival height	Y 300
Air	None. You need a spacesuit or a sealed room.
Cost from Earth Orbit	1 300 m/s (via Mars Orbit: 1 000 + 300)
Cost from the Earth's surface	2 800 m/s
Cost back to Mars Orbit / Earth Orbit / the Earth	400 / 900 / 1 100 m/s

Mars is a red, dry, airless desert with underground crystal geodes and a buried research outpost.

Terrain and biomes

• Mars Plains is the surface biome. The ground is Mars Surface Regolith over Mars Regolith over Mars Stone. The world has no oceans or lakes.
• Mars Cave is the underground biome, where the nickel sulfate geodes generate.
• Cave carvers cut tunnels through the stone.

Both biomes are airless. The Mars biomes define no mob spawns.

Resources

Resource	Notes
Mars Stone	The base rock. Crushing it gives Mars Regolith.
Mars Regolith	Washing it gives chances at cobalt (12.5 % for 3 nuggets), nickel (8 % for 3) and aluminium (4 % for 3). This is a way to get cobalt without a diamond pickaxe.
Nickel Sulfate geodes	A shell of Crimsite and Veridium around crystals. Break the clusters for Nickel Sulfate Shards, the key ingredient of the Nickel Sulfate Catalyst. See Resources and Materials.

Structures

The Underground Outpost: a buried base in Mars Plains with seven barrels, each holding the Catalyse Cycle design blueprint and 2 to 6 cobalt ingots. See Structures and Loot.

Surviving

• Without a full suit and a charged oxygen backtank you take 2 health points of damage per second. See Life Support.
• Rockets landing here fall at about 9.2 blocks per second.
• Fall damage is scaled down to 38 % (3.71 ÷ 9.81).