Puf

Puf is a new planet being added in KSP 2, It has been nicknamed by the community the "eyeball planet" due to the ocean looking like the pupil of an eyeball.

Pre-alpha image of Puf showing large singular ocean

Surface

it appears that a large moon, protoplanet or other large object crashed into one side of Puf, creating a massive impact crater that filled with water, creating an ocean on one hemisphere,

Presumably the other side is rock. Puf also has ice caps

Atmosphere

Puf has a blue atmosphere.

Moons

As of now, it is unknown if Puf will have moons or not.