Space

Space is a layer appearing at the top of the world: ~950 feet and above, for large worlds. Gravity is decreased in Space, which means the player can jump higher, and will fall slower, similar to the Featherfall Potion effect.

In Space, air apparently still exists, so the breath meter does not appear.

As it is empty (apart from the occasional floating island), space does not contain any materials. The mobs that spawn are equal to those at slightly lower altitudes: Harpies and wyverns.

Possible methods of getting to Space are use of a Gravitation Potion, Wings, or building a pillar of Blocks.