(1):

(a.) Of or pertaining to an aster; as, astral rays; astral sphere.

(2):

(a.) Consisting of, belonging to, or designating, a kind of supersensible substance alleged to be next above the tangible world in refinement; as, astral spirits; astral bodies of persons; astral current.

(3):

(a.) Pertaining to, coming from, or resembling, the stars; starry; starlike.