This thesis intriguing encompasses exciting trends and discoveries in area of human exploration and progress in Astronomy, Paleontology, Astrobiology, Geology, Physical and Neurological Evolution which fundamentally effect for basis factors of life. Specially processing previously mentioned subjects under environment of planetary habitability and harbored life, possible to describe newly discipline called Eco Astronomy as a dominate conclusion. Due to general analysis of dominate conclusion of thesis, Eco Astronomy describe as the scientific study of extreme environmental conditions, effecting to the Harbor Life. The life origin, evolution existence of life in the universe related to harbor life concepts, means safe place providing refuge, comfort and sustainable harbor environment to any object. Comparative systematic analysis of extreme environmental conditions of planet earth, which based on paleontological & petrological factors representing reliable platform to develop fundamentals of Eco Astronomy and mechanics. Therefore, this discipline representing as kin subject to interpreting comparative model for any Harbor Life. As per the present knowledge on the life of the Universe, the earth is the only known place to harbor life. It depends on minimal conditions for the life such as temperature, water, radiation shielding, sunlight, oxygen, when a planet belongs to G2 type star forming like ours. With a rich diversity of species, earth is one of the prominent planets, where harbored life can be explored. In revealing the signs of the planetary habitability and harbor life of the planet earth, paleontological and petrological evidences give promising results. It provides a unique view into the history of life by showing the forms and features of life in the past and tells us how species have been evolved across the long period of the Earth’s history. Though the fossil records do not include every planet and animal that ever lived.
This thesis is to present some findings gathered from a study on modelling the harbored life in South Asian counties, specifically centralizing on Sri Lanka. Dominate investigations was initially focused on Sabaragamuwa Basin (Sri Lanka) where famous fossilized Rathnapura fauna have been recorded by Deraniyagala (1958). The gathered fossils (125samples) found from alluvial sedimentary deposits of gem pits were identified according to the special anatomical characters comparing with the similar species recorded in the literature. In addition, sediment samples collected from gem pits where those fossils were found were used for sedimentological analysis (stratigraphic analysis & soil carbon sequestration analysis). Hence much reliable extreme conditions to study that harbored life in Sri Lanka is possibly evidenced by these extinct species recorded as roaming during the Pleistocene Epoch. Absolute ages of harboring period must yet to be estimated. The characteristics of the fossils and the sedimentological environment of the deposits represent a wet warm condition during the Pleistocene epoch, which abrupt change in local paleoclimate proxy (pCO2 , SSTMg/Ca,) that caused the extinction cannot clearly be identified so far. Modification and upgrading the current analysis details in to the fundamentals of data bank consisted as analysis of radiocarbon dating of direct sample or stratigraphic layer, analysis of milankovitch cycles or earth precession and analysis of proxy, to revealed possible causes extinction and limitations of the extreme environment. Sometimes in controversial, my thesis present stimulating new points of view regarding our universe & ourselves base on extreme conditions & concept of Eco Astronomy.
Approximately five billion years ago the sun began to form out of diffuse gas and dust. There was nothing at first sight to distinguish it from myriads of other stars. Like all the others, the new sun began to burn and emit light as it contracted. During the final stages of condensation, it happened to produce a large surrounding nebula of diffuse gas and dust. The particles and molecules of the nebula collided with each other and coalesced in to successively larger bodies. Eventually these bodies formed into large planets circling around the central star. Some of the newly formed worlds were large gaseous bodies made up primarily of hydrogen. These planets differed very little in structure from sun itself. Other planets were small, rocky, airless worlds with surfaces that were scarred by the impact of giant meteorites. Still others were enveloped in dense, choking atmospheres of poisonous gases. Many were frozen wastelands completely covered with solid ice, all were indescribably hostile to living creatures. One of these new worlds was different: It had warm, pleasant climate with continents, oceans, running water, and blue skies. It was the third planet from the sun, a place that came to be known as Earth. The oceans and the surface of earth soon become teeming with life. Some of the creatures that evolved here had supple hands, endowing them manual dexterity.
They develop large brain endowed with a passionate curiosity about their surrounding and a desire to understand their place in the cosmos. Their large brain and supple hand enabled them to escape from a total dependence on the capricious whims of nature; they could change their world to improve their lives and enhance their chance of survival. Human beings developed technology. They built cities, created religions, developed writing, produced science and mathematics. Human life and culture spread to every available niche on earth. Human beings came to dominate the entire surface of the world within only a few thousand years of their appearance Now that human are the undisputed masters of their planet, they are looking upward to the skies in search of new worlds to conquer.
The drama of life and intelligence on earth is a saga that has lasted for the past three and half billion years and we hope, shall continue in to the indefinite future. Has this story been repeated countless numbers of times in many different variation on other worlds, or is the earth somehow unique? . Perhaps there are many worlds in the universe which involved advanced societies that rose to brilliant levels of achievement only to destroy themselves in a few short years through their misuse of technology. If such is the fate of all technological societies, humanity stands very little chance of survival. On the other hand, perhaps there are some technological civilization that have managed to survive their own crises of technological adolescence and have gone on to build advanced and stable societies lasting millions or even billions of years. There likely is much that they could teach us about the art of survival. If someone else in the stars has managed to endure, perhaps we also have chance.