What is my astral body?

A soul can clothe itself in various bodies—or rather it has various bodies. It has a thought body, an astral body, a spiritual, vapourish body, and a sublimated material spiritual body.

Telepathy is the action of the thought body.

Etherealization is the astral body when it is genuine. An intangible, impalpable spiritual presence is the thin, vapourish body, the astral corresponds to the ether, the vapourish to the vapour, the thought body to the thought, while the exquisite, sublimated material spiritual body is at rest here like one of earth who is sleeping. For instance, a spirit here with a sensitive now controlling to write before coming here for that purpose says in its mind or with its own thought body, I am now going down to earth to write a message to the people. On its return, it awakens—or rather its various bodies are once more joined together, and the spirit arises and goes about its business in the spheres.