Rivers were used to turn watermills and the Romans even used geothermal water for heating. Until the middle of the 18th century renewable sources of energy were the only forms of energy available, but then, with the advent of the Industrial Revolution, fossil fuels began to be exploited.
The Sidereal Zodiac is the position of the sun referenced against the star background, as a measure of the flow of time. The framework for the star background is the constellations the sun passes in front of. This is the one astronomers use.
Gemini. The 3rd astrological sign of the zodiac. The sun is in this sign from May 21st to June 21st. It is a masculine, positive (extrovert) sign. It's element is Air and quality is Mutable.Mercury is Gemini's ruler (as well as Virgo's) and dominates communication, variability, mentality, but is also inconstant. Their versatility can make them superficial at times, and nervousness is only generated in the wrong setting.t's element is Air and quality is Mutable. Mercury is Gemini's ruler (as well as Virgo's) and dominates communication, variability, mentality, but is also inconstant. Their versatility can make them superficial at times, and nervousness is only generated in the wrong setting.