Also this one is interesting.
Aeromancy is the art of foretelling the future by the observation of atmospheric, air or sky phenomena. This goes beyond the range of weather prognostications, concentrating in such things as wind currents, cloud shape and formation, comets and falling stars, spectral formations, and other phenomena which are not normally seen or visible in the heavens. Even today such visions cause speculation and sometimes consternation among human viewers.
Some of the different forms of Aeromancy include Eromancy, Austromancy, Chaomancy, Roadomancy and Ceraunoscopy.
Aeromancy (from Greek aero, "air", and manteia, "divination") is divination conducted by interpreting atmospheric conditions.
History of Aeromancy -- Due to the historical interest people have had in weather, seeing it as a medium by which the gods expressed both joy and anger towards those who worshipped them, it is no surprise that aeromancy is one of the oldest forms of divination. The Hindus, Etruscans, and Babylonians in particular found the signs in the sky to be of great interest and practiced forms of chaomancy and ceraunoscopy (see Types of Aeromancy). This fascination with the omens in the skies was reflected by the gods worshipped by these peoples. Two gods associated with ceraunoscopy are:
There are several types of divination that can be categorized under the term "aeromancy":
Modern Aeromancy - Some forms of modern aeromancy have taken a more introspective turn than their historical counterparts. For instance, modern nephomancy is a receptive, almost meditative process, by which a person is said to be able to examine their unconscious. The nephomancer studies the clouds, whose formations are random and constantly changing. The images and symbols the diviner picks out from the chaos are believed to have some sort of significance to the diviner, so long as he applies his own personal interpretations to the symbols, rather than those written or spoken about by another.
This is in the ancient times people believed the Gods had the power over the wheather so they used to look at the sky and its effects and ask for its particuar pleasing or sacrifice leading to many rituals or blood sacrifices.
Yet this is some sort of modern astronomy! and this is what i do in a scientific manner:)