"Ethereal light" refers to light that appears delicate, heavenly, or otherworldly. It is a soft, gentle type of light that seems almost magical or surreal. Full definition
Visual manifestations of UFOs are typically simple joinings of convex and concave discs, often envisioned at night, emitting ethereal light in an undetermined manner. (temporaryartreview.com)
about Clint Baclawski creates seemingly endless environments with ethereal light installations (massart.edu)
Spencer Finch is best known for ethereal light installations that visualise his experience of natural phenomena. (lissongallery.com)