An ass which is so large, that a probe or spaceship could land on it.
An ass planet is dangerous, that you may
get captured or lured into the ravein by the serpent turd.
The only way to escape the crevice is if the serpent releases his methane-esque fumes, which escape at a rate high enough to compel you into
deep space.
An ass planet does not have an atmosphere, the only thing surrounding it is the fumes it has excreted from its core.
NASA has discovered a habitable planet, the ass planets! They are round, foul-smelling,
squishy planets. Many think that when we achieve landing, we may
lick the hole beneath the poopy
anus crater!