Impact bombardment of the terrestrial planets and the early history of the Solar System

2013 ◽  
Vol 6 (7) ◽  
pp. 520-524 ◽  
Author(s):  
Caleb I. Fassett ◽  
David A. Minton
Keyword(s):  
Solar System ◽  
Early History ◽  
Terrestrial Planets ◽  
History Of

scholarly journals Resonant trans-Neptunian objects as a source of Jupiter-family comets

2006 ◽  
Vol 2 (S236) ◽  
pp. 31-34
Author(s):  
E. L. Kiseleva ◽  
V. V. Emel'yanenko
Keyword(s):  
Solar System ◽  
Dynamical Evolution ◽  
Early History ◽  
Substantial Contribution ◽  
Outer Solar System ◽  
Symplectic Integrator ◽  
Relative Fraction ◽  
Outward Transport ◽  
Short Period ◽  
History Of

AbstractThe dynamical interrelation between resonant trans-Neptunian objects and short-period comets is studied. Initial orbits of resonant objects are based on computations in the model of the outward transport of objects during Neptune's migration in the early history of the outer Solar system. The dynamical evolution of this population is investigated for 4.5 Gyr, using a symplectic integrator. Our calculations show that resonant trans-Neptunian objects give a substantial contribution to the planetary region. We have estimated that the relative fraction of objects captured per year from the 2/3 resonance to Jupiter-family orbits with perihelion distances q<2.5 AU is 0.4×10−10 near the present epoch.

scholarly journals Voyager Saturnian ring measurements and the early history of the solar system

1986 ◽  
Vol 34 (2) ◽  
pp. 145-154 ◽  
Author(s):  
H. Alfvén ◽  
I. Axnäs ◽  
N. Brenning ◽  
P.A. Lindqvist
Keyword(s):  
Solar System ◽  
Early History ◽  
History Of

Chondrites: Initial Strontium-87/Strontium-86 Ratios and the Early History of the Solar System

Science ◽  
1973 ◽  
Vol 182 (4109) ◽  
pp. 281-283 ◽  
Author(s):  
G. W. Wetherill ◽  
R. Mark ◽  
C. Lee-Hu
Keyword(s):  
Solar System ◽  
Early History ◽  
History Of

scholarly journals Iron isotope evidence for very rapid accretion and differentiation of the proto-Earth

2020 ◽  
Vol 6 (7) ◽  
pp. eaay7604 ◽  
Author(s):  
Martin Schiller ◽  
Martin Bizzarro ◽  
Julien Siebert
Keyword(s):  
Solar System ◽  
Isotope Composition ◽  
Terrestrial Planets ◽  
Carbonaceous Chondrites ◽  
Iron Isotope ◽  
System Composition ◽  
Solar System Objects ◽  
History Of ◽  
Isotope Evidence ◽  
Enstatite Chondrites

Nucleosynthetic isotope variability among solar system objects provides insights into the accretion history of terrestrial planets. We report on the nucleosynthetic Fe isotope composition (μ54Fe) of various meteorites and show that the only material matching the terrestrial composition is CI (Ivuna-type) carbonaceous chondrites, which represent the bulk solar system composition. All other meteorites, including carbonaceous, ordinary, and enstatite chondrites, record excesses in μ54Fe. This observation is inconsistent with protracted growth of Earth by stochastic collisional accretion, which predicts a μ54Fe value reflecting a mixture of the various meteorite parent bodies. Instead, our results suggest a rapid accretion and differentiation of Earth during the ~5–million year disk lifetime, when the volatile-rich CI-like material is accreted to the proto-Sun via the inner disk.

Trojans’ Odyssey: Unveiling the early history of the Solar System

2011 ◽  
Vol 33 (2-3) ◽  
pp. 685-721 ◽  
Author(s):  
Philippe Lamy ◽  
Pierre Vernazza ◽  
Joel Poncy ◽  
Vincent Martinot ◽  
Emmanuel Hinglais ◽  
...  
Keyword(s):  
Solar System ◽  
Early History ◽  
History Of

scholarly journals The Early History of the Solar System

Nature ◽  
1918 ◽  
Vol 101 (2545) ◽  
pp. 447-449 ◽  
Author(s):  
HAROLD JEFFREYS
Keyword(s):  
Solar System ◽  
Early History ◽  
History Of

scholarly journals The early history of the earth

1988 ◽  
Vol 7 (1) ◽  
pp. 38-47
Author(s):  
C. P. Snyman
Keyword(s):  
Solar System ◽  
Laws Of Nature ◽  
Early History ◽  
The Sun ◽  
Natural Phenomena ◽  
The Earth ◽  
History Of ◽  
By Products

In view of the principle of actualism the early history of the earth must be explained on the basis of present-day natural phenomena and the basic Laws of Nature. The study of the solar system leads to the conclusion that the planets were formed as by-products when the sun developed from a rotating cloud of cosmic gas and dust. The protoplanets or planetesimals could have accreted as a result of mutual collisions, during which they could have become partly molten so that they could differentiate into a crust, a mantle and a core on the basis of differences in density.

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