Answer:
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair
You might accuse someone living with a stolen identity of being this.
Hot tempered and sometimes it blows its top, making a mess of everything.
A twiggy home
I'm a god, a planet, and measurer of heat. Who am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?