The enigma of Stonehenge, the first astronomical observatory.
The word megalithic literally means "<u>big stone</u>" and the culture named by this name would have spread since the end of the Neolithic.
Stonehenge, literally "<u>Circle of stones</u>."
<u>Although the researchers play with three possibilities</u>, it was concluded that the stones indicated twelve different positions of the Sun and the Moon, which allowed to predict eclipses, which is why it was considered a true astronomical observatory.
In tonal Western classical music (music with a tonic key or "home key"), the most frequently encountered chords are triads, so called because they consist of three distinct notes: the root note, and intervals of a third and a fifth above the root note. ... A series of chords is called a chord progression
