I find the writings of Sri Jagadguru Paramacharya of Kanchi to be way better than any explanation I can give. Here is a full posting of it.
<b>Eye of the Vedapurusa</b>
Of the fourteen branches of learning basic to our Vedic religion, I have so far dealt with siksa, Vyakarana, Chandas and Nirukta. These four form part of Sadanga (the six limbs of the Vedas). I will now speak about Jyotisa, it being the first of the remaining two of the Sadanga. Jyotisa, which is the science of the celestial bodies and the eye of the Vedapurusa, consists of three "skandhas" or sections. So it is called "Skandha-trayatmakam". Sages like Garga, Narada and Parasura have written samhitas (treatises) on this subject. The sun god, in disguise, taught the science to Maya, the carpenter of the Asuras. The work incorporating his teachings is called the Suryasiddhanta. There are treatises on astronomy written by celestials and sages and ordinary mortals. Of them some are by Varahamihira, Aryabhata and Bhaskaracarya. In recent times we had Sundaresvara Srautin who wrote a work called Siddhanta-Kausthubham.
Why is Jyotisa regarded as the eye of the Vedapurusa?
What purpose is served by the eye? Near objects may be perceived by the sense of touch. With our eyes we learn about distant objects. Just as our eyes help us to know objects that are distant in space (that is just as we see distant object with our eyes), Jyotisa sastra help us to find out the position of the heavenly bodies that are distant in time (their configuration many years ago in the past or many years hence in future).
We can find out directly the positions of the sun and the moon and other heavenly bodies. Just as we can know near objects, even if we are blind, by feeling them with our hands, we can learn about the positions of the heavenly bodies near in time even without the help of astronomy. What is 50 feet away is to be perceived by the eye. Similarly, if you want to know the position of planets 50 years ago or 50 years hence, you have to have recourse to Jyotisa.
We cannot, however, form a full picture of near objects only by feeling them. For instance, we cannot know whether they are green or red. For this, we must see them with our eyes. Again, even if we are able to see the planet with our naked eye, we will need the help of astrology to find out its effects on our life, how its positions in the heavens will influence our destiny.
This is the reason why Jyotisa is called the eye of the Vedapurusa. Vedic rituals are performed according to the position of the various planets [and the sun and the moon]. There are rules to determine this. The right day and hour [muhurta] for a function is fixed according to the position of the celestial bodies. Here again, Jyotisa performs the function of the eye.
This Anga of the Vedas is indeed called "nayana" which word means "to lead". A blind man needs to be led by another. So it is the eye that leads. Astronomy / Astrology is the eye that enables us to fix the hours for Vedic rituals.
<b>Astronomy and Astrology</b>
Astronomy examines the position of the planets and other heavenly bodies. It does not concern itself with how they affect the life of the world or the individual. It is not its function to find out how far the celestial bodies are beneficial to us or how they may be made favourable to us. Such functions belong to astrology. Jyotisa includes both astronomy and astrology.
Telling us about the results of performing a ritual at a given time, keeping in mind the position of the planets, the sun and the moon and the naksatras ( asterisms ), comes under the purview of astrology. The hours favourable to the performance of Vedic rites are determined according to calculations based on the movement of planets. All this entails mathematical work.
The measurements of the place where a sacrifice is to be conducted (yajnabhumi) are based on certain stipulations. These must be strictly adhered to if the sacrifices is to yield the desired benefits. Mathematics developed in this way as a handmaid to the Vedic dharma.
<b>Ancient Mathematical Treatises</b>
Jyotisa, as we have seen, consists of three sections. There was a scholarly man in the Matha who was particularly learned in this science. We wished to honour him with a title and decided upon "Triskandha-Bhaskara". "Skandha" literally means a big branch springing from the trunk of a tree. The three skandhas of Jyotisas are : siddhanta, hora and samhita.
The siddhanta-skandha deals with arithmetic, trigonometry, geometry and algebra. The higher mathematics developed by the west in later centuries is found in our ancient Jyotisa.
Arithmetic, called "vyakta-ganita" in sanskrit, includes addition, subtraction, multiplication and division. "Avyakta-ganita" is algebra. "Jya" means the earth and "miti" is method of measurement. "Jyamiti" evolved with the need to measure the sacrificial place :"geometry" is derived from this word. The "geo" in geography is from "jya". There is a mathematical exercise called "samikarana" which is the same as "equation".
The sixth Anga of the Vedas, Kalpa ( I will speak about it later ), has a great deal to do with the fifth, that is Jyotisa. Kalpa has a section on "sulba-sutras". These sutras mention the precise measurements of the "yajnavedi" (sacrificial altar). The character of the yajnabhumi is called "cayana". The sulba- sutras deal with a number of cayanas like, for instance, the one shaped like Garuda. They tell us how to construct a brick-kiln ---the number of bricks required for the cayana of such and such shapes. The siddhanta-skandha is used in all this.
There is an equation in the Apastamba sulba sutras which could not be proved until recently. Westerners had thought it to be faulty merely as they could not solve it. Now they accepted it as right. That Indians had taken such great strides in mathematics, thousand of years ago has caused amazement in the West. There are a number of old equations still to be solved.
Our sastras mention branches of mathematics like "rekhaganita, "kuttaka", "angapaka", etc. "Avyakta-ganita" is also called "bijaganita".
Eight hundred years ago there lived a great mathematician called Bhaskaracarya. An incident in his life illustrates how relentless destiny is. Bhaskaracarya had a daughter called Lilavati. The great astrologer that he was, he found that she had "mangalya-dosa" in her horoscope, but he felt confident that he could change his daughter's destiny, as foreshadowed by the stars, with his ingenuity and resourcefulness, as an astrologer. He decided to celebrate Lilavati's marriage during a lagna in which all the planets would be in positions favourable to the bride. This should, he thought, ensure that Lilavati would remain a "dirgha-sumangali".
In those days there were no clocks as we have today. A water-pot was used to measure time. It consisted of an upper as well as a lower part. The water in the upper receptacle would trickle down through a hole into the lower container. The lower part was graduated according to the unit of time then followed ---nazhikai (nadika), one sixtieth of a day or 24 minutes. So the time of day was calculated by observing the level of the water in the lower container. ("Water-clock" and "hour-glass" are English names for such an apparatus. Since water evaporates quickly sand was used instead. )
According to the custom then prevailing, Lilavati's marriage was to be celebrated when she was still a child. On the appointed day, she sat beside the water--clock and bent over it fascinated by the apparatus. As she fumbled around a pearl from her nose--stud got loosened and fell into the apparatus lodging itself in its hole. The flow of water into the lower receptacle was reduced. So what the clock indicated as the hour fixed for the marriage was not the right one---the auspicious hour had passed. Nobody including Lilavati, had noticed the pearl dropping into the water-clock. When they came to know about it, it was too late. They realised that destiny could not be overcome.
Later Bhaskaracarya wrote a mathematical treatise and named it "Lilavati" after his daughter. The father taught his widowed daughter mathematics and she became highly proficient in the subject. Lilavati deals with arithmetic, algebra, etc. It is a delightful book in which the problems are stated in verse as stories. Bhaskaracarya also wrote the Siddhanta-Siromani which deals with how the positions and movement of the heavenly bodies are determined.
We learn the text of an edict in the Pracinalekhamala that a Gurjara (Gujarat) king had made an endowment to popularise the works of Bhaskaracarya.
Parts 7, 8, 9 and 10 of Euclid's Geometry are believed to be lost. All the 12 books on mathematics in Sanskrit are still available. "Making additions several times is multiplication; carrying out subtraction several times is division. " We remain ignorant of such easy methods of calculations dealt with in our mathematical texts.
Varahamihira lived several years before Bhaskaracarya, that is about 1, 500 years ago. He wrote a number of treatises including the Brhat-Samhita and the Brhajjatika. The first is a digest of many sciences, its contents being a wonderful testimony to the variety of subjects in which our forefathers has taken strides. Brhajjatika is all about astrology.
Aryabhata, famous for his Aryabhatiya-Siddhanta, also lived 1, 500 years ago. The vakya--ganita now in use is said to be based on his Siddhanta. Varahamihira and Aryabhata are much acclaimed by mathematicians today.
All these books on mathematics also deal with the movements of the celestial bodies. There are seven "grahas" according to the ancient reckoning--the five planets and the sun and the moon. Rahu and Ketu are called "chaya -grahas" (shadow planets) and their orbits are opposite of the sun's and the moon's.
<b>Planets and Stars</b>
How do the planets differ from the stars? The planets revolve round the sun; the stars do not belong to the sun's "mandala" [they are not part of the solar system]. If you hold a diamond in your hand and keep shaking it about, it will glitter. The stars glitter in the same way and twinkle, but the planets do not twinkle.
The sun and the stars are self-luminous. The stars dazzle like polished diamonds. The planets Jupiter and Venus shine like the bigger stars but they do not twinkle. The sun too has the brilliance of the stars[it is in fact a star]. If you gaze intently at the sun for a moment the watery haziness surrounding it will vanish. Then it will look like a luminous disc of glass floating in water and it will not be still. The moon is not like it. I will tell you how to prove the sun twinkles. Observe the sun sun's light pouring down from an opening in the roof. Observe similarly moon's light also coming into your room. You see the sun's rays showing some movement but not the moon's. The planets are also like the moon.
If the star is a big one, we may be able to see its light refracted into the seven colours(vibgyor), like the colours emanating from a brilliant diamond.
The sun is called "Saptasva" (one with seven horses--the sun god's chariot is drawn by seven horses). It is also said that there is only one horse drawing the chariot but it has seven different names. "Asva" also means "kirana" or ray. So "Saptasva" could mean that the sun emits seven types of rays or colours. It is of course the same light that is split into seven colours. In the Taittiriya Aranyaka it is clearly stated that the same "asva" or ray has seven names: "Eko asvo vahati saptanama. "
The stars are self-luminous, while the planets shine by reflected light. The light of the stars is not still. That is how we say, " Twinkle, twinkle little star ". The stars rise in the east and set in the West. The planets too travel westward but they keep moving a bit towards the east every day. It is like a passenger walking westward on a train speeding eastward. The seven planets thus keep moving eastward.
<b>The Grahas and Human Life</b>
The conditions of man corresponds to the changes in the position of the nine grahas. A human being does not enjoy happiness all the time nor does he always suffer hardships-- that is he experiences a mixture of happiness and sorrow. While he may be pushed up to a high position today, he may be thrust down to the depths tomorrow. It is not man alone that is subject to changes of fortune. Establishments too have their ups and downs, so also nations.
The sages saw a relationship between the position and movements of the planets and the destiny of man, the sorrow and happiness experienced by him. There is a branch of astrology called "hora--skandha". If we knew the planetary position at the time of commencing a job or enterprise, with its help we should be able to find out how it would take shape, how we would fare in it. If our horoscope is cast on the basis of the configuration of the planets at the time of our birth, our fortunes over the entire period of our life can be predicted.
Different reasons are given for the ups and downs in a man's life for his joys and sorrows. It is similar to finding out the different causes of the ailment he suffers from. The physician will explain that the disease is due to an imbalance in the "dhatus". The mantravadin will say that it is due to the gods being displeased with the patient, while the astrologer will observe that it is all in his (the patient's) stars. The pandit versed in Dharmasastra will explain that the illness is the fruit of the man's past actions, his karma. And the psychologist will express the view that the bodily affliction is related to an emotional disturbance. What is the true cause?
All these different causes may be valid. All of them together go to create an experience. When it rains it becomes wet and the place is swarmed with winged white ants. Frogs croak. All these are indicators of the rain. Many outward signs manifest themselves as the fruits of our past karma. They are all related to one another. The course of the planets governing our life is in accordance with our karma. We come to know the consequences of our past actions in previous births in various ways. Astrological calculations help us to find out such consequences as indicated by the heavenly bodies.
<b>Omens. Signs.</b>
Where can you discover water? Where does ground water occur? Or where do streams flow inside the earth? By what signs on the surface do you make out the presence of water underground? How are perfumes manufactured? What are the right measurements for a house? These questions are discussed in the samhita-skandha of Jyotisa. Also omens and signs.
"Sakuna" is one thing, "nimitta" quite another. "Sakuna" literally means a bird: only signs connected with birds come under the category of "Sakuna". All things in this world are interrelated: all happenings are linked to one another. If we know the precise scale and manner in which events are woven together, we would be able to know everything. Everything in this world occurs according to the will of the One Being and according to a precise system. So with reference to one we can know all others. Palmistry, "arudam" (a method of divination), astrology, all are interrelated.
What does a bird flying from right to left indicate? What is foretold by the chirping of such and such a bird? Question like these belong to the sakuna-sastra. "Nimitta" means omen. "Nimittani ca pasyami viparitani Kesava" says Arjuna to Krsna before the start of the battle of Kuruksetra. He uses the right word "nimitta" while we use the word "sakuna" carelessly. When a cat crosses our path it is an omen; when an eagle flies above us it is a sakuna.
To go back to Arjuna. The Lord tells Arjuna: "Nimittamatram bhava Savyasacin". This is in answer to Arjuna telling Krsna, lamenting, that it is sinful to kill one's enemies [or one's kin]. Says krsna: "I have already resolved to slay them in this battle. So they are already as good as dead. It is I who will kill them. You are a mere tool" (Nimittamatram bhava).
A nimitta does not produce any result on its own. It points to the result that has already been ordained by some other factor--or, in other words, it merely indicates the fruits of our past karma.
<b>Modern Discoveries in Ancient Works</b>
There are a few scientific discoveries that are not found mentioned in Varahamihira's Brhat-Samhita.
How do heavenly bodies remain in the skies? How is it that they do not fall? Everybody thinks that it was Newton who found the answer to such questions. The very first stanza in the Suryasiddhanta, which is a very ancient treatise, states that it is the force of attraction that keeps the earth from falling.
In Sankara's commentary on the Upanisads there is a reference to the earth's force of attraction. If we throw up an object it falls to the ground. This is not due to the nature of object but due to the earth's force of attraction. "Akarsana-sakti" is force of attraction, the power of drawing or pulling something. The breath called "prana" goes up, "apana" pulls it down. So the force that pulls something downward is apana. The Acarya says the earth has apana-sakti. The Prasnopanisad (3. 8) states: "The deity of the earth inspires the human body with apana". In his commentary on this, Sankara observes that, just as an object thrown up is attracted by the earth, so prana that goes up is pulled down by apana. This means that our Upanisads contain a reference to the law of gravitation. There are many such precious truths embedded in our ancient sastras. Because of our ignorance of them we show inordinate respect for ideas propounded by foreigners, ideas known to us many centuries before their discovery by them. Our Jyotisa is also some thousands of years old. Even so it foresaw the mathematical systems prevalent in the world today.
At the beginning of the kalpa, all grahas were in alignment. But over the ages they have changed their courses. When another kalpa commences, they will again remain in alignment.
The "samkalpa" we make before the performance of any ritual contains a description of the cosmos, a reference to the time cycle, and so on. All this is part of Jyotisa.
Centuries ago, we knew not only about the earth's force of attraction but also about its revolution round the sun. Aryabhata, Varahamihira and others spoke of the heliocentric system long before the Western astronomers or scientists. Until the 16th century people in Europe believed that the earth remained still at the centre of the universe and that the sun revolved around it. They further believed that this was how day and night were created. If anybody expressed a different view he was burned at the stake by the religious leaders.
"It is the earth that revolves around the sun, not the sun round the earth", declared Aryabhata. He used a beautiful term to describe the logic behind his view : "laghava-gaurava nyaya". "Laghu" means light, small, etc and "laghava" is derived from it. The opposite of "laghu" is "guru", weighty, big, etc. "Guru" also denotes a weighty personality, a great man, like an acarya or teacher, one who has mastered a sastra. If the acarya is guru the disciple must be laghu. The student is small and "light" compared to his guru. So he goes round the latter. This is based on "laghava-gaurava nyaya". By adducing this reason for the earth going round the sun, Aryabhata combined science with a traditional sastric belief.
In the old days religious leaders in Europe were opposed to science and even burned scientists as heretics. But today we join the descendants of the very same people to make the preposterous charge that the Hindu religion stood in the way of scientific advancement, that it ignored the matters of this world because of its concern for the other world. As a matter of fact our traditional sastras are a storehouse of science.
"The sun remains still and it is the earth that goes round it. It is only because the earth revolves round the sun that it seems to us that the sun rises every day in the east and sets in the west". This is mentioned in Aitareya Brahmana of Rgveda. The text says clearly : "The sun neither rises nor sets".
That all learned people in India knew about the earth's revolution is shown by a passage in the Sivotkarsa-Manjari by Nilakantha Diksita who was minister of Tirumala Nayaka. One stanza in this work begins like this : "Bhumir bhramayati" and from it we must also gather that the author's great-uncle, Appayya Diksita, also knew about this truth. What is the content of this verse?
Siva is called "Astamurti". Earth, water, air, fire, space, the sun and the moon, the yajamana or sacrificer--they are all the personification (murti) of Isvara. Among them only the yajamana has no bhramana or motion. All the rest have bhramana, says Appayya Diksita. That he has said so is mentioned in the verse in question by his younger brother's grandson, Nilakantha Diksita.
We see that air has movement, that fire does not remain still, that water keeps flowing. When we look up into the sky, we notice that the sun and the moon do not remain fixed to their spots. As for space, it is filled with sound and it cannot be still. But the earth apparently stands still. Even so, says Appayya Diksita, it has motion. "It revolves".
Let us now consider the shape of the earth. Europeans claim that they were the first to discover that the earth is like a ball, that in the past it had been thought to be flat like a plate. All right. What word do we use for "geography"? "Bhugola sastra", not just "bhu-sastra". We have known from early times that the earth is a "gola", a sphere.
We call the universe with all its galaxies, "Brahmanda". It means the egg created by Brahma (the cosmic egg). An egg is not exactly spherical in shape, but oval. According to modern science the universe too is oval in shape. The cosmos is always in motion, so observe modern astronomers. "Jagat" is the word by which we have known it from Vedic times. What does the word mean? That which does not stand still but is always in motion, that which "is going".
In our country too there were people who refused to believe that the earth rotates on its axis. I will tell you the view of one such school of thought. The earth's circumference is about 25, 000 miles. So if it rotates once in 24 hours then it means it rotates more than 1, 000 miles an hour or 16 or 17 miles in one minute. Those who did not accept the fact of the earth's rotation tried to prove their point thus :"There is a tree in Mylapore [in Madras]. Imagine there is a crow perched on one of its branches. It leaves its perch this moment and soars high and, by the next minute, it perches itself again on the branch of the same tree in Mylapore. If the rotation of the earth were a fact how would this be possible? The crow should have descended to a place 16 or 17 miles away from where it had started.
I have not checked on how this argument was answered. But when I asked people who know modern science they said : "Surrounding the earth for some 200 miles is its atmosphere. Beyond that there are other spheres. When the earth rotates these too rotate with it". I may have gone slightly wrong in stating the view of modern science. However it be, there is no doubt that when the earth rotates, its atmosphere also rotates with it.
What are called Arabic numerals actually belong to India. This fact was discovered by Westerners themselves. The zero is also our contribution and without it mathematics would not have made any advance. Bhaskaracarya established the subtle truth that any quantity divided by zero is infinity ("ananta"). He concludes one of his mathematical treatises with a benedictory verse in which he relates zero to the Ultimate Reality.
When the divisor goes on decreasing the quotient keeps increasing, does it not? If you divide 16 by 8 the quotient is 2; if the same quantity is divided by 4 the result is 4. Divided by 2, the quotient is 8. Divided by zero? The quotient will be infinity. Whatever the number divided, the result will be infinity if the divisor is 0. Bhaskaracarya gives it the name of "khahara". "Kham" means zero, "haram" means division. Bhaskaracarya says : "I pay obeisance to the Paramatman that is Infinity".
<b>Not Blind Belief</b>
"Hindu sastras are all nonsensical, " exclaim critics of our religion. "They say that north of the earth is the Meru mountain, that our one year is one day for the celestials residing there, and that the sun revolves round it. They believe that, besides the ocean of salt, there are oceans of sugarcane juice and milk, in fact several kinds of oceans. They describe the earth with its five continents as consisting of seven islands. It is all prattle. "
Why should the ocean be salty? Who put the salt in it? Why should not there have been an ocean tasting sweet or of milk? Is the talk about the seven islands and the seven oceans absurd? What to the sastras say about the position of the earth, the same sastras that speak about the seven ocean, and so on? "Meru is situated on the northern tip of the earth, " they state. "Directly opposite to it is the Pole star(Dhruva). "
The northern tip of the earth is the North pole. Is the Pole star directly opposite to it? No. "Eons ago, " scientists explain, "it was so. But later big changes took place and the earth tilted a bit. " The sastras refer to a time when the Pole star was directly opposite the North Pole and at that time the seven islands and the seven oceans must have existed. When the rotating earth tilted a bit the oceans must have got mixed and become salty and in the process the seven islands must have become the five continents.
If there is a place above the North Pole it must be Meru where we have our svarga or paradise. Let us imagine that this earth is a lemon. A spot on its top is the Meru peak. In relation to that spot any other part of the fruit is south. Where can you go from there, east or west? You can go only south. You will learn this if you mark a point on the top of the lemon. For all countries of the earth, for all "varsas", north is Meru. "Sarvesamapi varsanam Meruruttaratahsthitah. "
On the North pole it is six months day and six months night. We must have been taught this in our primary classes. It means our one year is one day on the North pole. This is what is meant by saying that our one year is one day for the celestials.
When the earth rotates, the northernmost and southernmost points are not affected. In some places there will be sun for 18 hours and in other places only for six hours. There are many differences in the durations of day and night with regard to different places on earth. Only on some days does the sun rise directly in the east and is overhead without departing even by one degree. On other days it rises from other angles(from north-east to south-east). Such is not the case on the North pole. There the sun shines six months and the other six months it is darkness. And, again, during the sunny months it would seem as if the sun were revolving round this place(the North pole).
The six-month period when there is sun in the North Pole is called uttarayana and the similar sunny period on the South Pole is daksinayana.
The North Pole is called " Sumeru" and the South Pole "Kumeru". ("Sumeria" is from Sumeru. In that land, it is said, the Vedic gods were worshipped. ) Just as the North pole is the abode of the gods, the South pole is the abode of the fathers (pitrs) and hell. To see the gods and the pitrs who are in the form of spirits and the denizens of hell one must obtain divine sight through yoga. Merely because we do not possess such sight we cannot deny their existence. There was Blavatsky who was born in Russia, lived in America and later came to India. She speaks about the worlds of the gods and of the spirits. A great scientist of our times, Sir Oliver Lodge, affirmed the existence of spirits and deities and stated that mankind could benefit from them. If you ask why Jyotisa, after dealing with the science of astronomy, should turn to spiritualism, the answer is that there is no contradiction between the two as supported by the example of a scientist like Sir Oliver who too turned to spiritualism.
Our sastras came into existence at a time when mortals mixed with the gods. We would be able to appreciate this fact if we tried to understand the samkalpa we make at the time of performing any religious function. The samkalpa traces the present from the time of creation itself. From Jyotisa we learn the position of the grahas at the commencement of the yuga: then they were all in a line.
Some calculations with regard to heavenly bodies today are different from those of the past. And, if the findings at present are not the same as seen in the sastras, it does not mean that the latter are all false. The sastras have existed from the time the grahas were in a line and the North pole was directly opposite the Pole star. Since then vast changes have taken place in nature. Valleys have become mountains, mountains have become oceans, oceans have become deserts and so on. Geologists speak about such cataclysmic changes, and astronomers tell us about the change in the courses of the heavenly bodies. So what we see today of the earth and the heavenly bodies is different from what is mentioned in the sastras.
The date of creation according to Jyotisa agrees more or less with the view of modern science.
Kali yuga--the age of Kali--has a span of 432, 000 years. Dvapara yuga is twice as long, 864, 000 years, Treta yuga is 1, 296, 000 years and Krta yuga 1, 728, 000 years. The four yugas together, called maha yuga, are 4, 320, 000 years long. A thousand mahayugas add up to the period of 14 Manus. The regnal period of a Manu is a manvantara. There are royal and republican rulers on earth, but God has appointed Manu as ruler of all the worlds. There are fourteen Manus ruling the world successively from the creation of man. The word "manusya" and " manuja" are derived from Manu. So too the English word "man". In the samkalpa for any ritual we perform we mention the year of the seventh Manu, Vaivasvata. If we go back to the first Manu, Svayambhuva, we arrive at a date for the origin of the human species which agrees with the view of modern science.
The Sanskrit word, "man", means to think. Manu was the first of the human race with its power of thinking. There is a saying in English :" Man is a thinking animal. " "Since man's distinctive characteristic is his capacity to think the descendants of Manu came to be called "manusyas. "
The life-span of the fourteen Manus put together make one day(daytime) of Brahma, that is 4, 320, 000, 000 years. His night has the same length. While one day of Brahma is thus 8, 640, 000, 000 years his one year is 365 such days and his life-span is 100 such years. The life of his cosmos is the same. When Brahma's life comes to an end the Brahman alone will remain and there will be no cosmos. Then another Brahma will start creation all over again. It is believed that Hanuman will be the next Brahma.
Bhuloka, Bhuvarloka, Suvarloka, Maharloka, Janaloka, Tapoloka and Satyaloka comprise the seven worlds. The gods, mortals and so on live in these worlds. Bhuloka, Bhuvarloka and Suvarloka form one group. "Bhurbhuvassuvaha, " we pronounce this so often while performing rituals. The remaining four belong to higher planes. When Brahma goes to sleep at night the first three worlds will be dissolved in the pralaya (deluge). This is called "avantara-pralaya"("intermediate deluge"). All other worlds will perish when his life-span ends.
Scientists say that the heat of the sun is decreasing imperceptibly. Without the warmth of the sun there will be no life on earth. Scientists have calculated the time when the sun's heat will be reduced so much that life on earth cannot be sustained. Then this world itself will perish. The date on which this will occur agrees with that given by our sastras for the next "avantara-pralaya".
Half of Brahma's allotted life-span is over. This life-span is divided into seven "kalpas". Now we have come more than half way of the fourth kalpa, "Svetavaraha". We mention in samkalpa how old Brahma is at the time we perform a rite, which year we are in of the saka era, also the year according to the 60-year cycle beginning with Prabhava--all details of the almanac including the day, the asterism and the lagna. The date of Brahma's appearance, according to this calculation is said to agree with the view of modern science of when this cosmos came into being.
Brahma is called "Parardha-dvaya-jivin". It means he lives for two "parardhas". A "paradha" is half the number meant by "para". When Brahma is called "Paradha-dvaya-jivin" it means he lives as many years as is meant by 2*1/2 paras. Two half paras are the same as one para. Then why say "parardha-dvaya" instead of just one "para". The reason for this is that Brahma has already completed half of one para and is going on 51. So it is meaningful to use the term "half of para"[two half-paras].
Fourteen Manus reign successively during one daytime of Brahma which lasts a thousand caturyugas. So one manvantara is 71 caturyugas. Now running is the 28th caturyuga, the Vaivasvata manvantara. And of it, it is Kali yuga now. In our samkalpa we mention all this and, in addition, the day according to the moon, the Lagna, etc. We also mention how we are situated in the space, from the Brahmanda down to the locality where we are performing the function (for which the samkalpa is made). It is all similar to writing the date and address on a letter.
<b>Empirical Proof</b>
A ray of light pouring through an opening in the roof of a building falls on a particular spot. Normally, we shall not be able to tell where the same ray of light will fall next year. But a prediction can be made with the help of Jyotisa. This is how it was done in the olden days. A pearl attached to a thread was hung from the roof. If a man was able to indicate correctly in advance where its shadow would fall on a particular day, he received a reward from the king. One's competence in other sastras is established through argument, but in Jyotisa it has to be proved by actual demonstration. You cannot deceive anyone by employing the methods taught by this science. The sun and the moon are witness to what you do. "Pratyaksam Jyotisam sastram. "
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For this, and more insights into the Hindu Dharma, please visit the Kanchi Kamakoti Peetam website. Sri Jagadguru's Upadesam and discourses is what makes my faith in Dharma stronger. It is a pity that a shadow of misfortune is now cast upon the Matam. With Lord Chandramouleeswara's grace, and our faith in the matam, it will be able shine in it rightful glory.
http://www.kamakoti.org/newlayout/templa...harma.html
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