Many scientist have tried to find the causes of the Earth’s climate-fluctuations but no theory has given a comprehensive explanation yet. We can separate the hypotheses into many groups.
A part of the theories tries to explain the climate’s fluctuations the movements of the continents others assign such an influence to mountain forming processes. According to these scientist’s conceptions around the formations of ice ages large continents can be found the other part of the theories are physical-chemical type. The fluctuation of the Earth’s climate is explained by the variation of the atmosphere’s chemical composition and the influence of these to the Earth’s balance of heat. According to some scientists out sun’s light varies, so the quantity of it’s radiation changes in every 200-250 million years, what affects the climate of the Earth. The most outworked theory is that there are astronomical reasons behind the fluctuations. The theory which say that the character of the seasons which could be traced back to changes of astronomical reasons could cause freezes at regular spaces of time, was raised in the last century. The detailed outworking and forming it to mathetacit of a Yugoslav astronomer, M.M. according to his opinion, the astronomical „Myth regulator” has 3 components.
The first factor is the piton of the Earth’s axis of rotation. To the influence of the increasing of the piton the seasons became extremer on both hermit pheres. Summers became hotter, winters became colder.
The second factor is the form of the Earth’s orbit. If the eccentrism of the orbit increases, the difference between the sun’s and Earth’s biggest and smallest distance increases. This result is the on one hemisphere the season become extremer and on the other they became more temperate.
The third astronomial cycle is the rocking of the Earth's pitch Milankovics calculated that these that because of the influences of these 3 factors the quantity of the summer sun shines could change by 20% hear the North pole. In his opinion this is enough to the ice field what covers the northern part of the continents, to march at such periods, when cool summer and mild winters change themselves.