標(biāo)題: Titlebook: Comets and the Origin of Life; Proceedings of the F Cyril Ponnamperuma Conference proceedings 1981 D. Reidel Publishing Company, Dordrecht, [打印本頁] 作者: amateur 時(shí)間: 2025-3-21 19:49
書目名稱Comets and the Origin of Life影響因子(影響力)
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書目名稱Comets and the Origin of Life網(wǎng)絡(luò)公開度學(xué)科排名
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書目名稱Comets and the Origin of Life讀者反饋學(xué)科排名
作者: ornithology 時(shí)間: 2025-3-21 20:54
Comet Nucleus: Some Characteristics and a Hypothesis on Origin and Structure,mets. These points will be followed by presentation of the problem of cosmic ray irradiation of comets in the long time they survive in the Oort Cloud. A more detailed discussion of this phenomenon, including an experimental investigation of ice irradiation by 1 MV proton, will be given by Marla Moo作者: Landlocked 時(shí)間: 2025-3-22 00:26
Ultraviolet Spectroscopy of Comets,l as several simple molecules made from these species have their strong resonance transitions in the ultraviolet region of the spectrum. However, due to the opacity of the atmosphere to ultraviolet, these observations must be made from space, and it was not until 1970 that the extensive HI Lyman α e作者: dictator 時(shí)間: 2025-3-22 05:41 作者: entitle 時(shí)間: 2025-3-22 11:46
Interplanetary Dust - Its Physical Nature and Entry into the Atmosphere of Terrestrial Planets,k, fine grained material similar to carbonaceous chondrites but different from known meteorites in mineralogy and structure. If the analyzed samples are typical interplanetary particles then they are probably cometary materials similar to the vast numbers of cometary particles which have continuousl作者: 悄悄移動(dòng) 時(shí)間: 2025-3-22 16:33 作者: 悄悄移動(dòng) 時(shí)間: 2025-3-22 19:40
Chemical Kinetics IM the Coma,are described and correlated to distance in the coma above the nucleus and to heliocentric distance of the comet. Two classes for the composition of comets are considered based on their place of origin: in the environs of the giant planets or in a companion fragment of the presolar nebula. Compariso作者: RENIN 時(shí)間: 2025-3-23 00:16 作者: Oration 時(shí)間: 2025-3-23 02:21
,Chemical Evolution of Interstellar Dust — A Source of Prebiotic Material ?, cloud collapse (early pre-solar nebula) of complex non-volatile molecular mixtures of oxygen, carbon and nitrogen with hydrogen in addition to such volatile combinations as H.O, CO, etc. These constituents may be presumed to be the predominant constituents of a comet which accreted out of the inter作者: defile 時(shí)間: 2025-3-23 05:47 作者: PRE 時(shí)間: 2025-3-23 13:34
Comets and the Photochemistry of the Paleoatmosphere,volution of life. The photochemistry/chemistry of atmospheric O. in the paleoatmosphere is investigated using a one-dimensional photochemical model that includes the chemistry of the oxygen, nitrogen, hydrogen, carbon, and chlorine gases. The role of cometary influx of H.O on the photochemistry of t作者: 強(qiáng)壯 時(shí)間: 2025-3-23 17:17
Cometary Material and the Origins of Life on Earth, are necessary for life have been found in comets. By comparing their carbon abundances with those of carbonaceous chondrites it has been estimated that 10% or more of the cometary matter is made of organic compounds. The nature of the chemical species detected in comets suggests that the complexity作者: 朋黨派系 時(shí)間: 2025-3-23 21:54 作者: Landlocked 時(shí)間: 2025-3-24 00:48
Missions to Comets: The Perspective in 1980,s rare opportunity. The European Space Agency, Soviet Union and Japan have missions to study Comet Halley. The United States has not committed itself to a Halley mission, but a rendezvous mission with a short period comet remains among the National Aeronautics and Space Administration’s high priorit作者: SMART 時(shí)間: 2025-3-24 03:32 作者: agenda 時(shí)間: 2025-3-24 07:48 作者: analogous 時(shí)間: 2025-3-24 12:22
Analyzing Moral Danger and Self-Fearnt at other times..At all times the outflowing cometary ions are decelerated and diverted into the tail by a strong “inner” shock which is also of a variable nature. When the cometary neutrals cannot penetrate the ionopause, this inner shock is of a special type. It becomes a hybrid “ion-neutral” sh作者: Ingenuity 時(shí)間: 2025-3-24 16:56
Conclusion and Remaining Challenges,h interstellar molecules suggests that there is an extremely close connection - and probable identity - between interstellar “frost” and cometary snows. Although the origin of the solar system is far from being clearly understood, probable scenarios link interstellar frosty grains and comets. Isotop作者: Substance 時(shí)間: 2025-3-24 22:08
Foundations of Social Education for Peace,on of the solar nebula; (3) organic compounds produced by the cosmic-ray heating of the matter in the Opik-Oort cloud during its lifetime, and (4) the more complex organic compounds synthesized in the icy surface layers of the cometary nuclei by the action of the solar wind, UV radiation and induced作者: brassy 時(shí)間: 2025-3-25 00:48 作者: etiquette 時(shí)間: 2025-3-25 05:57
nt of all objects in our solar system. Whether there is, however, a biology of comets still remains to be seen, although some claims have been made that perhaps comets might themselves provide an environment for even the beginnings of life. Scientists with the latest available information on comets and differ978-94-009-8530-8978-94-009-8528-5作者: 逃避現(xiàn)實(shí) 時(shí)間: 2025-3-25 07:41
The Nature of Comets,s. Review of more evidence regarding bursts, splitting, jets, halos, dust and the basic structure of comets will center around the question of radioactive heating, possible exothermic reactions, and internal structure. This is relevant to suggestions concerning the development of life forms in comet作者: bleach 時(shí)間: 2025-3-25 12:58
Ultraviolet Spectroscopy of Comets,he observations of comet Bradfield, made with the orbiting International Ultraviolet Explorer, were the first to span a wide range of heliocentric distance (0.7 to 1.5 a.u.). The results of these observations and their interpretation are reviewed in terms of their contribution to our understanding o作者: 漂亮才會(huì)豪華 時(shí)間: 2025-3-25 17:21
Interaction of Comets with the Interplanetary Medium,nt at other times..At all times the outflowing cometary ions are decelerated and diverted into the tail by a strong “inner” shock which is also of a variable nature. When the cometary neutrals cannot penetrate the ionopause, this inner shock is of a special type. It becomes a hybrid “ion-neutral” sh作者: Yourself 時(shí)間: 2025-3-25 23:44
Are Comets Connected to the Origin of Life?,h interstellar molecules suggests that there is an extremely close connection - and probable identity - between interstellar “frost” and cometary snows. Although the origin of the solar system is far from being clearly understood, probable scenarios link interstellar frosty grains and comets. Isotop作者: CHOKE 時(shí)間: 2025-3-26 00:40 作者: Redundant 時(shí)間: 2025-3-26 07:46
Social Economics: Retrospect and Prospecty entered the Earth’s atmosphere for the lifetime of the solar system. If comets do not contain large strong rocks capable of producing conventional meteorites then dust is the only form in which organic materials from comets can be accreted by the Earth.作者: abracadabra 時(shí)間: 2025-3-26 11:47 作者: Cumulus 時(shí)間: 2025-3-26 12:59 作者: nugatory 時(shí)間: 2025-3-26 18:06 作者: 進(jìn)取心 時(shí)間: 2025-3-26 23:36 作者: Duodenitis 時(shí)間: 2025-3-27 02:21
Social Economies of Fear and Desireonductivity is ideal. Observations of both the ray closure and the disconnection events point to the phenomenon of anomalous resistivity. Magnetic field of about 30–40γ in the coma and of 10γ in the distant tail (at 1 AU) is estimated from the MHD momentum equation.作者: aerobic 時(shí)間: 2025-3-27 06:33
Comet Nucleus: Some Characteristics and a Hypothesis on Origin and Structure,. A more detailed discussion of this phenomenon, including an experimental investigation of ice irradiation by 1 MV proton, will be given by Marla Moore. The concluding section is a hypothesis on the origin and structure of cometary nuclei.作者: Patrimony 時(shí)間: 2025-3-27 11:29 作者: OATH 時(shí)間: 2025-3-27 14:40 作者: 脆弱吧 時(shí)間: 2025-3-27 20:13
Comets and the Photochemistry of the Paleoatmosphere,he paleoatmosphere is also examined. Recently, it has been suggested that our planet received a significant portion of the volatiles presently in the atmospheric/oceanic/biospheric system from cometary volatile influx. Several consequences of a cometary H.O influx on the photochemistry and structure of the paleoatmosphere are presented.作者: harbinger 時(shí)間: 2025-3-28 00:48 作者: 別炫耀 時(shí)間: 2025-3-28 03:33
Evolution of Social Economics in Americacontrolled by abundances in the nucleus, as seems likely, they imply that comets are uniform with depth in the nucleus and that nearly all comets formed in a homogeneous region of the pre-solar nebula.作者: cathartic 時(shí)間: 2025-3-28 08:25 作者: Palter 時(shí)間: 2025-3-28 12:51
Chemical Abundances in Comets,controlled by abundances in the nucleus, as seems likely, they imply that comets are uniform with depth in the nucleus and that nearly all comets formed in a homogeneous region of the pre-solar nebula.作者: propose 時(shí)間: 2025-3-28 16:29 作者: Middle-Ear 時(shí)間: 2025-3-28 22:40
Conference proceedings 1981 Cornet Watch and a cornet launch by the European Space Community, the Japanese and Soviet Space Scientists. The meet- ing held at the University of Maryland in October 1980 was primarily stimulated by the preparations for further study of this cornet and by one of the most important unanswered ques作者: 健壯 時(shí)間: 2025-3-29 02:27
https://doi.org/10.1007/978-94-009-2498-7Some of the problems presented by the observations of the C. molecule in comets is discussed in terms of the proposed model. The model is shown to explain satisfactorily all the available observations at the present time.作者: 四指套 時(shí)間: 2025-3-29 03:45 作者: Crohns-disease 時(shí)間: 2025-3-29 11:08
https://doi.org/10.1007/978-1-349-18786-7Arguments are given for life being a cosmic phenomenon. The physical and chemical conditions associated with comets favour the hypothesis that comets carry, amplify and disperse life throughout the universe.作者: ARC 時(shí)間: 2025-3-29 11:50 作者: 影響深遠(yuǎn) 時(shí)間: 2025-3-29 16:47
Comets and the Origin of Life - The Stable Isotope Approach,To establish links between comets and the origin of life, a greatly improved knowledge of the carbon isotopic composition of cometary bodies will be necessary. Some suggestions are presented as to how the required data might be obtained from presumed terrestrial cometary debris or from in situ measurements by a cometary probe.作者: 藥物 時(shí)間: 2025-3-29 20:48
Comets - A Vehicle for Panspermia,Arguments are given for life being a cosmic phenomenon. The physical and chemical conditions associated with comets favour the hypothesis that comets carry, amplify and disperse life throughout the universe.作者: 濃縮 時(shí)間: 2025-3-30 03:44 作者: 信條 時(shí)間: 2025-3-30 07:46 作者: 招待 時(shí)間: 2025-3-30 08:14 作者: Servile 時(shí)間: 2025-3-30 13:28
Missions to Comets: The Perspective in 1980,s rare opportunity. The European Space Agency, Soviet Union and Japan have missions to study Comet Halley. The United States has not committed itself to a Halley mission, but a rendezvous mission with a short period comet remains among the National Aeronautics and Space Administration’s high priorities for the 1980’s.作者: 遠(yuǎn)足 時(shí)間: 2025-3-30 17:14 作者: Genome 時(shí)間: 2025-3-30 22:27
Social Emergence in International Relationss rare opportunity. The European Space Agency, Soviet Union and Japan have missions to study Comet Halley. The United States has not committed itself to a Halley mission, but a rendezvous mission with a short period comet remains among the National Aeronautics and Space Administration’s high priorities for the 1980’s.作者: Bmd955 時(shí)間: 2025-3-31 02:46
https://doi.org/10.1007/978-1-349-19806-1nal forces, sizes, and rotation of the nuclei. Following a brief discussion of the composition of the nuclei, some of the evidence regarding homogeneity and possible development into earth-crossing asteroids is presented. The latter touches on the question whether we have in the laboratory any sampl作者: WITH 時(shí)間: 2025-3-31 06:55 作者: Accrue 時(shí)間: 2025-3-31 12:57
Evolution of Social Economics in Americal as several simple molecules made from these species have their strong resonance transitions in the ultraviolet region of the spectrum. However, due to the opacity of the atmosphere to ultraviolet, these observations must be made from space, and it was not until 1970 that the extensive HI Lyman α e作者: 冰雹 時(shí)間: 2025-3-31 15:20 作者: badinage 時(shí)間: 2025-3-31 17:58
Social Economics: Retrospect and Prospectk, fine grained material similar to carbonaceous chondrites but different from known meteorites in mineralogy and structure. If the analyzed samples are typical interplanetary particles then they are probably cometary materials similar to the vast numbers of cometary particles which have continuousl作者: 五行打油詩 時(shí)間: 2025-3-31 22:11
Analyzing Moral Danger and Self-Fearis interaction is highly variable. It is also shown that the cometary neutrals play a dominant role in standing-off the solar wind, particularly during “quiet” conditions in the solar wind. Consequently the cometary ionosphere is generally highly incompressible, although it can be highly inflated su作者: 繼而發(fā)生 時(shí)間: 2025-4-1 02:05 作者: 沉默 時(shí)間: 2025-4-1 08:12 作者: lavish 時(shí)間: 2025-4-1 12:28
Social Economies of Fear and Desire cloud collapse (early pre-solar nebula) of complex non-volatile molecular mixtures of oxygen, carbon and nitrogen with hydrogen in addition to such volatile combinations as H.O, CO, etc. These constituents may be presumed to be the predominant constituents of a comet which accreted out of the inter作者: 游行 時(shí)間: 2025-4-1 16:02 作者: Cytology 時(shí)間: 2025-4-1 20:09
Foundations of Social Education for Peace,volution of life. The photochemistry/chemistry of atmospheric O. in the paleoatmosphere is investigated using a one-dimensional photochemical model that includes the chemistry of the oxygen, nitrogen, hydrogen, carbon, and chlorine gases. The role of cometary influx of H.O on the photochemistry of t
