Uranomancy

Uranomancy or Ouranomancy is a divination by consulting the heavens or observing the natural phenomena in the sky.

Etymology

Derived from the Greek ouranos ('firmament') and manteia ('prophecy')

See Also:

You may be also interested in :

Divination for Beginners: Reading the Past, Present & Future -Scott Cunningham
Earth Divination: Earth Magic: Practical Guide to Geomancy - John Michael Greer