Space Ponies are mysterious phenomena that can be found very rarely in planets.

The badge of completion for the "Space Ponies!" achievement.
If one discovers space ponies on their planet, they receive the "Space Ponies!" achievement. The description of the achievement does little to clear up the mystery behind it, only commenting "Um... What?" The Badge depicts a bright pink pony with a glass dome over its head, rearing on its hind legs. However, little else can be said positively or negatively about the space ponies.