Well Carol and fiiish you both just gave me a cool image!!!
If planet X is a red positive field and Earth is a green negative field than they attract each other, but if Earth becomes a positive field then Earth and planet X repel each other and would push away catastrophic scenarios or at least minimize them I suppose.
So a '+' on Earth '-' repels the effects of 'X' in space!!!!
a + on top of a - is a double cross

and neutralizes x to = 'Peace On Earth'