Senya

Senya is a small, diverse terrestrial world. Senya is tidally locked with the Sun, having the same face oriented towards it at all times. As a result, Senya's terrain varies dramatically from one side of the planet to the other; the side facing the Sun is a blistering desert, whilst the side in darkness is a frozen wasteland.

These two opposing climates meet in a belt of permanent twilight, which encircles the planet from pole to pole. Roughly twelve miles across, this tranquil stretch of marshland is the only habitable area of the planet, and is home to a variety of strange and serene life forms, floating in the world's low gravity.