What do you think aliens shit looks like?
Or used to look like before they solved the food/body organs - energy to waste ratio issue?
I figure every planets home world must have a tree of some type. Trees are used for shelter, for building materials, to hide from predators, for food, for cooking/warmth energy, to make a floating boat object over whatever the worlds liquids are, for fibers to make textiles and clothing, ropes, strings, etc.
So, at one point or another, every alien shit from up in the trees.
They took alien shits up in alien trees, and the alien shit fell to the planet at a rate determined by the consistency of the shit, the gravity of the world.
Like in a water world, the bottom of water world would be shit world, everything in water world would shit down onto the bottom.
Just evil alien shit everywhere.
https://youtu.be/ohlW9SbhLzc?si=DvXgTg5j1O7tliUO