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between mass and energy, sun is loosing its mass at the rate of 46,000 tons per second and if it continues to radiate energy at the present rate, its mass will be reduced to zero after a few billion years, when Universe becomes devoid of solar energy, all life on earth will dis-appear and it will be a sort of Pralaya.
In recent years, another interesting discovery has been made. It is well known that the magnetic north pole does not coincide with the geographical north pole. There is an angle between them. Now, it has been found that the magnetic poles. of the earth are slowly rotating and a time will come when the north pole will go into the position of south pole and vice versa. In between, there will be a period of 100-200 years when the earth will have no magnetic field at all because when we go from a negative quantity to a positive one, zero comes in between.
The earth's magnetic field acts like an umbrella for the showers of destructive cosmic rays which are coming profusely from inter-stellar space. The earth's magnetic field deflects them to one side and it is only in very small numbers that they are able to reach us. The rotation of the poles has a period of about 7,50,000 years and the last reversal took place some 7,00,000 years back. Thus after 40 to 50 thousand years", it is likely to occur again. At the time of zero magnetic field, all cosmic ray showers fall upon the earth with full destructive force and the latter is completely scorched to death. This is Mahapralaya.
On 30th June, 1908, there was an unusual explosion in Siberia in the Soviet Union. The explosion may be compared to a 30 megaton hydrogen bomb explosion, i. e. equal to 1500 Hiroshima atomic bombs exploding together. American scientists are of the opinion that it was an explosion caused by an antimatter intruder of about one kilogram weight, that entered accidentally into our atmosphere and fell upon the earth. If someday a lump of antimatter weighing about 10 tons enters into our universe, it will create such a violent explosion that the whole world will be reduced to dust. This is the latest view of science on the subject of Mahapralaya.
References
1. Rajju is very big unit of length like the light year whose magnitude has been seperately discussed.
2. In the measurement of the Universe, Mahãyojana is used, this being 2000 times greater than yojana.
3. Although, the law of gravitation is associated with Newton, it was already known to the great Indian astronomer Bhaskaracharya some six hundred years before Newton. Bhaskara enunciated the law exactly in the same mathematical form as did Newton.
4. The universe is called Brahmaṇḍa which means egg of Brahma. This egg was made of gold. According to Big Bang theory, some five billion years ago, this egg, due to some unknown cause suddenly began to expand and
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