Astral Plane
From Nighthawks Shadowrun Wiki
The Astral Plane (or Astral Space) is a plane of existance which overlays the physical (real) world. Light is produced on the Astral Plane by life or magic which appear in vibramt colours, while technological devices appear grey and dark. All objects in the physical world project an Aura on the Astral Plane which can be studied using the skill Aura Reading or Psychometry.