Dating your own zodiac sign can be tricky, as the other person will mirror both your best and worst traits back to you.
For example, Cancers are as cozy together as two bugs in a rug, but can also drive each other crazy with their moodiness.
Among the artifacts that can most readily be dated by astronomical techniques are depictions of the positions of the celestial bodies at a particular time.
Since the motions of the celestial bodies are all at different periods, it takes many centuries for all the planets plus the Sun and the Moon, to reach the same positions in the signs of the Zodiac.
John Steele has proposed three questions that must be asked when dating an event: Does the record refer to an actual astronomical event, or is this merely a modern assumption?
If it does refer to an actual astronomical event, is the source reliable?
Can the record provide an unambiguous date without making unwarranted assumptions about ancient astronomical observational methods?
Babylonian astronomical diaries provide detailed and unambiguous accounts of the positions of all the visible planets, often in relation to specific stars, that have been used to provide precise dates of events like the defeat of Darius III by Alexander the Great at the Battle of Gaugamela on 1 October 331 BCE and of Alexander's subsequent death on 11 June 323.
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The resulting time was about noon of 12 December 1581.
A more controversial archaeoastronomical approach has been used to date structures that are believed to have been oriented on astronomical principles by measuring their orientation and computing the date in the past when a single specified celestial body, whether the Sun or a selected star, rises or sets at the measured azimuth. Penrose, applied a similar method to ancient Greek Temples, attempting to establish their dates by relating their orientation to the appearance of stars on the horizon, the position of which changes slowly due to the precession of the equinoxes.
When the circumstances are not exact and descriptions leave ambiguities, one can often use other details such as the month of the eclipse or the position of other stars and planets to identify the specific eclipse.
Astronomical dating, like other forms of historical interpretation, requires care in interpreting the surviving written records.
Aquarians may be the best of friends, but could remain so detached that true passion never quite catches fire. Heaven forbid you should both want to be the center of attention at the same time! Get personalized relationship insight now » The Bull is stubborn, with a one-track mind. If not, you'll both need to expand your comfort zones -- not an easy task for either one of you.