StarFire was created with the intention to provide a tool to explore the depths of the universe and its secrets in a playful, educational, and thought-provoking manner. In order to do so, the player must design his spacecraft in such way it fits his individual needs and play style, and most importantly, withstands the dangers that linger in the dark. As such, StarFire implements models based on science, and may also cross the border between reality and the paranormal.
You can easily create your own planet textures with simple tools like MSPaint (see image at top left corner), if you just stick to the colors used to map a color to a texture.
The same way vegetation, weather and resources can be defined on the planet, which may result in planets being actually visitable in a distant future.