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201. http://star.arm.ac.uk/~meb/ras_leaflets2012/LifeInTheUniverse.2012.pdf
... DErEk MArTIN) Today Earth T Origin T The Earth The Earth was heavily bombarded from space until about 3900 million years ago. ... Surface conditions were hostile to life as the Earth was bombarded from space by material left over from the formation of the planets. ... Though the Earth will then be uninhabitable, Mars could have become suitable for carbon­ water life, and so our species, or its descendants, might find The Earth, devoid of oceans and atmosphere, with refuge there for a while. ...
[ Текст ]  Ссылки http://star.arm.ac.uk/~meb/ras_leaflets2012/LifeInTheUniverse.2012.pdf -- 330.8 Кб -- 05.03.2012
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202. http://www.atnf.csiro.au/people/Angel.Lopez-Sanchez/divulgacion/Amenazas_del_Cielo.pdf
... Todas las culturas antiguas observaban el cielo para encontrar respuestas a los quehaceres de su vida cotidiana. Esa gigantesca bСveda que era el firmamento estaba repleta de una inmensa cantidad de pequeЯas luces que salМan por el Este y se ponМan por el Oeste, siempre a las mismas distancias relativas unas de otras. ... El calendario se fue desarrollando como Зtil herramienta para controlar el paso de las estaciones, y surgiС una astrologМa que relacionara el mundo celestial con el terrenal. ...
[ Текст ]  Ссылки http://www.atnf.csiro.au/people/Angel.Lopez-Sanchez/divulgacion/Amenazas_del_Cielo.pdf -- 417.2 Кб -- 03.02.2008
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203. http://www.mso.anu.edu.au/~charley/papers/LineweaverChopra2012.pdf
... Rev. Earth Planet. ... All rights reserved 0084-6597/12/0530-0597$20.00 Keywords habitable zones, circumstellar habitable zones, terrestrial planets, life, abiogenesis Abstract For life-forms like us, the most important feature of Earth is its habitability. ... The inhabited and uninhabited regions on Earth tell us that temperature and the presence of water are the main constraints that can be used in a habitability classification scheme for rocky planets. ... Figure 2 Emergence of habitable planets...
[ Текст ]  Ссылки http://www.mso.anu.edu.au/~charley/papers/LineweaverChopra2012.pdf -- 1937.6 Кб -- 03.05.2012
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