 | Bertram Donn - 1976 - عدد الصفحات: 576
...replenished by those in smaller orbits, more stable against stellar perturbations. Indeed Opik (1932) showed that stellar perturbations will systematically...may account for major crater formation on the Moon (see Hartmann, 1972) and volatiles on the terrestrial planets (Lewis, 1974). Alternative II, of forming... | |
 | 1976 - عدد الصفحات: 568
...replenished by those in smaller orbits, more stable against stellar perturbations. Indeed Opik (1932) showed that stellar perturbations will systematically...may account for major crater formation on the Moon (see Hartmann, 1972) and volatiles on the terrestrial planets (Lewis, 1974). Alternative II, of forming... | |
 | Bertram Donn - 1976 - عدد الصفحات: 564
...replenished by those in smaller orbits, more stable against stellar perturbations. Indeed Opik (1932) showed that stellar perturbations will systematically...may account for major crater formation on the Moon (see Hartmann, 1972) and volatiles on the terrestrial planets (Lewis, 1974). Alternative II, of forming... | |
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... Everhart's doubts may possibly be removed if the space density of comets originally fell off rapidly with solar distance and that the supply at great distances (Marsden and Sekanina, 1973) has been replenished by those in smaller orbits, more stable... 