Hinduism and Indian Philosophy have Scared Texts and legends.
The texts are both allegorical and facts.
For instance, the description of Patala refers to the physical location of a place inside/underneath the earth, it also denotes a stage of mental degradation.
Similarly the Saptha Rishi Mandal, or the Great Bear Constellation is a fact and it also refers to the Rishis of yore.
The Pole Star is Dhruva. the Loka granted by Vishnu to the Child Dhruva.
The astronomical events are cloaked in legends and Puranas.
What is unique is that they are real and also allegorical in describing celestial events.
Let us look into some of these.
The Post of Indra, the chief of Devas and Dhruva is ex officio.
Indra changes in every Yuga, that is the Post of Indra is constant while the person who occupies the place changes.
It is said that who does certain Yagas like the Aswamedha Yagas successfully becomes an Indra, dethroning the present incumbent.
Severe penance also warrants these results.
So Indra disturbs those who engage in these activities.
Now coming to Astronomy.
Time takes a toll on everything in the Universe.
If affects people and non living things.
People age so also the Rocks etc.
There are two aspects of Time, one is so minute that you do not notice it and the changes effected by it, like Micro seconds, nano seconds and seconds,minutes.
Even changes that occur hourly can be known only with the help of special instruments.
The other aspect of Time is it is so huge to be comprehended, like a light year or AU, Astronomical Unit that is equal to the distance traveled by Light in a Year.
One can not see this as this is a huge number and one may not be alive to see the change by oneself.
Such huge numbers are involved in the Universe in respect of formation of Stars,Galaxies .
Now all of us know the Earth has two movements, one spinning on its own Axis and another moving around the Sun.
The movement around the Sun’s signs by the earth is so slow that it is not noticeable.
Also because of the movement of the Earth and the Stars and other Celestial objects these objects change their relative places.
To put it simply, Stars change positions as also the Earth, taking the Sun as a reference point.
That the Sun also moves and there are many Suns is a different issue and I shall be posting on the implications.
This movement of the Earth in the Zodiacal Signs of the Sun is called the Precession of the Equinoxes.
Put it simply the Stars change places over a period of Time(long time)
The Pole Star, the Dhruva Nakshatra is taken as a reference in Hinduism and it changes its place once in approximately 26000 years.
This corresponds to one basic Yuga, the Kali Yuga.
According to Vishnu Purana Dhruva changes every Yuga like Indra, Saptha Rishis(Great Bear Constellation), along with the others in the Universe .
And the ten Avatars of Vishnu represent these Celestial changes.
“THE PRECESSION OF THE EQUINOXES is what determines the movement of the Ages backwards through the constellations. It can be understood through the analogy of the Earth spinning like a top, with the Sun and Moon pulling on its equatorial bulge. This gravitational influence creates a wobble, resulting in the precession or the shifting of the equinoctial points with respect to the stars. The north celestial pole describes a small circle with a radius of 23.5 degrees around the north ecliptic pole, with a consequent westward drift of the equinoxes – the two points where the celestial equator crosses the ecliptic. This is not to be confused with the movement of the Earth respective to the ecliptic of the Sun that occurs every year around March 21st, a movement that ever recurs on that date. What is here spoken of is the greater circle upon which the “ayanamsha” or ‘ascendant of the Earth’ is traced, and which coincides with the annual equinoctial point every 25,920 years. Set against the backdrop of the Zodiac, it takes the Earth 25, 920 years to make a “Complete Round” of the 12 astrological signs and 2,160 years to complete one astrological Age….
The Precessional Cycle was described by the Greek astronomer Hipparchus, in the Second century BC. but it seems to have been known in the ancient Vedic culture as well. In past millennia, astrologer priests known as Rishis developed precise formulas for calculating the cosmic cycles, and wove their celestial equations into the fabric of their myths and legends. Principal among these cosmological parables was the “Line of Ten Avatars”. According to tradition, Vishnu, one of the principle deities of the Hindu trinity takes birth at particular points in the cosmic cycle which correspond to the earth’s passage through the ‘Fixed’ zodiacal ages. Vishnu appears every 6,480 years at the commencement of the signs of Taurus, Leo, Scorpio and Aquarius. He appears at the behest of a suffering world and comes to destroy evil and injustice and reestablish the eternal truths of the Sanatana Dharma. The Bhagavad Gita, one of India’s most sacred scriptures, reveals something of this cosmic process in Krishna’s dialogue with Arjuna. Krishna tells his disciple:
‘Whenever the world declineth in virtue and righteousness; and vice and injustice mount the throne, then cometh I, the Lord and revisit my world in visible form, and mingleth as a man with men, and by my influence and teachings do I destroy the evil and injustice and reestablish virtue and righteousness. Many times have I thus appeared, and many times hereafter shall I come again.’…