Ancient Indian Astronomy, which is intricately linked to Indian Philosophy(in Hinduism all these are intricately interwoven) calls the Center of our Galaxy(Sagittarius A* a Super Massive black hole) as Vishnu Nabhi, the navel of Lord Vishnu.

Hinduism states that the world, through Brahma, evolved from the Navel of Lord Vishnu that is the Super massive black hole at the inter galactic center.

Brahma , with the blessings of Lord Vishnu created the world by producing Daksha Prajapathi , the first Man.

Then the entire Humanity evolved.

This is creation part elaborated.

Now to Astronomy.

The Sun ascends and descends from the navel of Lord Vishnu that is the black hole in the Center of the Galaxy.

Sun takes 12, 000 years for ascension, moving towards Galactic Center and 12000 years for descending, moving away from the Super Massive Black hole(Sagittarius A*).

These 24,000 year of Ascending and Descending cycle approximates the 25,765 Precessional Years when the sun moves backwards in the 12 zodiacal constellations.

Over the past decade researchers realized that most galaxies have at least one black hole in residence in their central regions.

For example, the size of a supermassive black hole appears to have a direct correlation to the galaxy where it exists. Almost a decade ago, researchers calculated that the mass of a supermassive black hole appeared to have a constant relation to the mass of the central part of its galaxy, known as its bulge (think of the yolk in a fried egg). This 1 to 700 relationship supports the notion that the evolution and structure of a galaxy is closely tied to the scale of its black hole.

Other studies found another strong correlation. This one was between the mass of a supermassive black hole and the orbital speed of stars in the outer regions of their galaxy where the direct gravitational influence of the supermassive black hole should be weak: the larger the black hole, the faster the outer stars travel.

Thus it’s now believed that black holes are not only common throughout the Cosmos but they play a fundamental role in the formation and evolution of the Universe we inhabit today.

In fact, we would not be here without them.

Super Massive Black Hole at the center of our Milky way Galaxy

“The Galactic Center cannot be observed at visible, ultraviolet, or x-ray wavelengths because interstellar dust obscures the line of sight. All scientific information about it comes from observations of gamma ray, hard X-ray, infrared, and radio wavelengths. The precise astronomical location of the Galactic Center at approximately 3 degrees Sagittarius (sidereal) was first verified in 1918 by Harlow Shapley. However its energetic connection to the earth was not realized until 1932 when Karl G. Jansky, an engineer working for Bell Telephone, was investigating the source of the static interference with overseas telephone lines. He discovered that the interference was due to radio waves being emitted from the center of the galaxy. The source of the radio waves appears to be located almost exactly at the Galactic Center, and may coincide with a super massive black hole. This black hole has the equivalent mass of 4 million suns and is the source of most of the gravitational energy in our galaxy. Thus the Galactic Center is the Black hole around which our Sun revolves.

Hinduism understood this connection between Sun and the Galaxy, and used it as a marker for the ascending and descending yuga cycles that are measured by our Earth/Sun relationship to it (ie the pole star alignments at the solstices).

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The Cycle of Four Yugas

The precession (caused by gradual rotation of the Earth’s axis) of the equinoxes is the period of time that it takes the Earth’s axis to pass through one complete cycle of the zodiac. It takes the planet 72 years to pass through one degree of the zodiac and 25,920 years to complete one full circle of 360 degrees. One half of the journey takes 12,960 years and covers the four yugas. Satya Yuga lasts 5184 years. Treta Yuga lasts 3888 years. Dwapara Yuga lasts 2592 years. Kali Yuga lasts 1296 years. These four yugas taken together come to a total of 12,960 years.

The Beginning of Kali Yuga

The story of Mahabharat needs to be seen in a certain context. In 3140 BCE, the Kurukshetra War ended, and in 3102 BCE, Krishna left his body. Three to four months after the war, the Kali Yuga began. As of 2012 AD, Krishna’s era ended 5,114 years ago. If you subtract 2592, which is the cumulative number of years of the two Kali Yugas that are at the bottom of the ellipse which describes the axial precession, you arrive at 2522 years. That means we have already completed 2522 years of Dwapara Yuga, and since its total duration is 2592 years, we still have 70 years until its completion. In the year 2082, we will complete Dwapara Yuga and move on to Treta Yuga. The world will go through another upheaval, not necessarily in terms of war but probably in terms of population explosion and natural calamities, before moving on to this new era of wellbeing and upward movement of human consciousness.

Yugas and Human Consciousness

The solar system with the Sun and the planets around it is moving in the galaxy. It takes 25,920 years for our solar system to complete one cycle around the Super Massive Black hole(Sagittarius A*). From the effects upon the planet, we believe this Black Hole at the galactic center that our system is going around is not located in the center of the orbit but somewhere to the side. Whenever our solar system comes closer to this big system, all the creatures living in our system rise to greater possibilities. Whenever our system moves away from it, the creatures living in our system come to the lowest level of possibility – we say this is Kali Yuga.

When our solar system is closer to the “Black Hole(Sagittarius A*),” Satya Yuga will begin. The human mind will be at its highest capability. People’s ability to know life, people’s ability to communicate, people’s ability to live joyfully will be at its highest. Or in other words, we will have sensible people. All it takes to live well on this planet is a bunch of sensible people.

In Satya Yuga, human ability to communicate will be at its best because the ether will be very close. Right now, the etheric sphere of the planet is raised to a certain point. There was a time when it was much higher – now it has come a little closer. When the ether is very close and I want to convey something to you, I do not have to say it. Even when my eyes are closed, you will know what I want to say. When the ether rises a little bit but is still at a certain distance, if I close my eyes, you will not know, but if I open my eyes and look at you, you will know what I want to convey.

The Ether and Spiritual Possibilities

If the ether rises some more, you can know by breath. If you go into the forest, you will see, because your vision is blocked to some extent, after some time, the most significant way of knowing things is by smell. Most animals that live there know things only by smell. Because of such concentrated life energy, the ether is high. Because the ether is high, they do not have to see. If you talk, they will get confused. When the ether is very low, you have to talk all the time – otherwise, people will not get it. Even if you talk, they will not get it. You have to knock and talk continuously to make them get it. The etheric content in the atmosphere determines how sensitive you are in terms of your ability to communicate.

At the same time, no matter which time, which yuga, which planetary position we are in right now, still, individual human beings can rise above all this. Still, individual human beings can live in a golden time within themselves. Even in the worst of times, the possibility to be well above it is always there for an individual human being.

There are many things one can do to enhance the ether or create etheric content. This is why Krishna said, in Kali Yuga, which is down there, far away from the Super Massive Black Hole, the ether will be so low that there is no point in trying to teach them yoga, meditation, mantras, or yantras – they will not get it. Just teach them devotion. If they are devout, they will generate their own ether. And because of this etheric content in the atmosphere, they will perceive. Devotion is not for the dumb – but even if you are the dumbest, you can still get it.

Thousands of years ago, they said that as the solar system moves closer to the Super Massive Black Hole(Sagittarius A*), human intelligence will blossom. As the solar system moves closer, the realization that the whole body and the whole universe are electric structures will come naturally. Right now, we are moving towards Treta Yuga, which is the second best time that can happen in a cycle of yugas.

Krishna also said that after over 5000 years, there will come a many thousand year period of time that will be fabulous. We will not make it there, but we can set the foundations for it and have the joy of creating an atmosphere for a stretch of thousands of years of golden time upon the planet. This is not all predictions and conjecture – this is based on a deep-rooted understanding about what happens with the human mind in relation to the planet on which we live. We do not only live on this planet – we are the planet. If you do not understand this today, you will understand this when you are buried. The planet understands that you are a part of it – only you think something else of yourself.

Hinduism follows the Great Bear Constellation’ or the Saptha Rishi Mandala or constellation

The findings are the same. but these calculations are easy to follow.

“According to this calendar the Great Bear stayed in one constellation for 100 years, thus adding up to 2,700 years for 27 constellations. However, 12,000 years were equally divided into four Yugas or Ages with each yuga getting 3,000 years: Satya Yuga (Golden Age), Treta Yuga (Silver Age), Dwapar Yuga (Bronze Age) and Kali Yuga (Iron Age), with the Transition or Mutation period of 300 years each.

It has been established by several scholars through the historical accounts in Mahabharata and visits of the Greeks travelers etc to India, that the Saptrishi Calendar started in 6676 BCE. Moreover, since Mahabharata describes events happening in Dwapara Yuga, it has been established that 6676 BCE marks the beginning of Descending Dwapara Yuga. According to this calculation, we are in the Ascending Kali Yuga (676 BCE to 2025 CE). Now, the Transitional Period of 300 years starts from 2025 CE and ends in 2325CE before the next yuga starts.

What is important here is the Transitional Period. Calculations indicate that in the past Transitional Periods, Sri Yukteshwar’s “complete change” indeed took place. Scholars have linked in this way:

Consider Transitional or Mutation Period preceding Ascending Kali Yuga, 300 years back from 676 BCE – Troy was destroyed, the great Mycenaean cities collapsed, “Third Intermediate Period” of Egypt happened, Indus Valley Civilisation ended, and Hekla volcano eruption”

It is expressed in these treatises that Human Intellect and culture peaks as the Sun moves towards the Super Massive Black Hole(Sagittarius A*) and declines when it moves away from it.

Source : http://projectavalon.net/forum4/showthread.php?64640-Entering-the-New-Cycle&p=747013&highlight=Mahabharata#post747013

http://isha.sadhguru.org/blog/yoga-meditation/science-of-yoga/kali-yuga-end-lies-ahead/

http://www.dailygalaxy.com/my_weblog/2014/05/the-supermassive-black-hole-candidates-at-the-center-of-every-normal-galaxy-might-be-wormholes-created-in-the-early-univers.html