Think about the fragile big headded aliens you see in drawings. What could make them so weak?
1. Their planet has less gravity than ours.
or
THEY HAVE SLAVES DOING ALL THEIR WORK!!! Maybe they come here to tell America they will give us technology to clone and in the process they steal some of our dna to make humans on their planet. They have these humans build their empires, spaceships, and food. They rape human women and take their babies away and sell them for food or interstellar court jesters (okay maybe not that). Basically they have to have somebody doing all their laborious work for them to be so fragile ya know?
1. Their planet has less gravity than ours.
or
THEY HAVE SLAVES DOING ALL THEIR WORK!!! Maybe they come here to tell America they will give us technology to clone and in the process they steal some of our dna to make humans on their planet. They have these humans build their empires, spaceships, and food. They rape human women and take their babies away and sell them for food or interstellar court jesters (okay maybe not that). Basically they have to have somebody doing all their laborious work for them to be so fragile ya know?