Weight is a function of gravity, which is proportionate to mass - which is why on the Moon you would weigh a sixth of what you do on Earth. However, mass is essentially the amount of matter contained in an object. The two are not the same.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'