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Cores of the Terrestrial Planets [PDF]
Nature, 1973 The compositions of the cores of the terrestrial planets have been re-examined following a calculation by O. G. Soroktin that the iron oxide Fe2O is stable at pressures reached in the Earth's core and his suggestion that the outer core may consist of Fe2O. It is shown that the idea of an Fe2O outer core in the Earth can be fairly well reconciled with a
K. E. Bullen, K. E. Bullen
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AIP Conference Proceedings, 2004
We present optical simulations of a new approach to directly image terrestrial planets. Terrestrial planets typically are 10 orders of magnitude fainter than the central star, a difficult challenge for any optical system. Our studies show that the combination of an external occulter and an apodizer yields the required contrast, with significantly ...
F. Bruhweiler +13 more
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We present optical simulations of a new approach to directly image terrestrial planets. Terrestrial planets typically are 10 orders of magnitude fainter than the central star, a difficult challenge for any optical system. Our studies show that the combination of an external occulter and an apodizer yields the required contrast, with significantly ...
F. Bruhweiler +13 more
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Provenance of the terrestrial planets
Geochimica et Cosmochimica Acta, 1994Earlier work on the simultaneous accumulation of the asteroid belt and the terrestrial planets is extended to investigate the relative contribution to the final planets made by material from different heliocentric distances. As before, stochastic variations intrinsic to the accumulation processes lead to a variety of final planetary configurations, but
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Water on the Terrestrial Planets
2007Water is the second most abundant molecule in our solar system, following only molecular hydrogen. It plays an important role in many planetary processes and has significant importance for the habitability of a planetary body. Despite the importance of water, its complex physical behavior is still only partly understood.
Helbert, J., Hauber, E., Reiss, D.
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Formation of the terrestrial planets
Earth, Moon, and Planets, 1994The early phases of formation in the inner solar system were dominated by collisions and short-range dynamical interactions among planetesimals. But the later phases, which account for most of the differences among planets, are unsure because the dynamics are more subtle. Jupiter’s influence became more important, leading to drastic clearing out of the
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Structure of the Terrestrial Planets
Nature, 1973Recent reviews (cf. Runcorn, 1968; or Cook, 1972, 1975) on the structure of the planets omit reference to the phase-change hypothesis for the nature of the terrestrial core, despite that numerous prior predictions of the theory based on this hypothesis have subsequently been borne out as correct.
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2014
The terrestrial planets (Mercury, Venus, Earth, and Mars), also called the inner planets, occupy the region within 1.5 AU from the Sun. They exhibit manifold properties of their surface landforms, geology, interiors, and atmospheric features. The Earth possesses a unique nature; the natural conditions of our neighbors Venus and Mars are completely ...
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The terrestrial planets (Mercury, Venus, Earth, and Mars), also called the inner planets, occupy the region within 1.5 AU from the Sun. They exhibit manifold properties of their surface landforms, geology, interiors, and atmospheric features. The Earth possesses a unique nature; the natural conditions of our neighbors Venus and Mars are completely ...
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1995
Mercury, the innermost planet, had been known since ancient times and its phases had been seen with early telescopes. Unfortunately, Mercury is a difficult object to observe, as it is always too low down in the sky when the Sun is below the horizon, and its image is consequently disturbed by the Earth’s atmosphere. As a result, it had proved impossible
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Mercury, the innermost planet, had been known since ancient times and its phases had been seen with early telescopes. Unfortunately, Mercury is a difficult object to observe, as it is always too low down in the sky when the Sun is below the horizon, and its image is consequently disturbed by the Earth’s atmosphere. As a result, it had proved impossible
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Feedstocks of the Terrestrial Planets
Space Science Reviews, 2018The processes of planet formation in our Solar System resulted in a final product of a small number of discreet planets and planetesimals characterized by clear compositional distinctions. A key advance on this subject was provided when nucleosynthetic isotopic variability was discovered between different meteorite groups and the terrestrial planets ...
Richard W. Carlson +4 more
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1979
The terrestrial planets possess markedly different intrinsic densities (Table 6.3), implying the existence of corresponding differences in chemical composition. Possible reasons for the compositional differences which were considered in Section 6.5, involved (a) fractionation of metallic iron from silicates in the nebula prior to accretion, and/or (b ...
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The terrestrial planets possess markedly different intrinsic densities (Table 6.3), implying the existence of corresponding differences in chemical composition. Possible reasons for the compositional differences which were considered in Section 6.5, involved (a) fractionation of metallic iron from silicates in the nebula prior to accretion, and/or (b ...
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