scholarly journals Isotopic Anomalies Early History of the Solar System

1983 ◽  
Vol 14 (2) ◽  
pp. 1-3 ◽  
Author(s):  
P. Bochsler
2006 ◽  
Vol 2 (S236) ◽  
pp. 31-34
Author(s):  
E. L. Kiseleva ◽  
V. V. Emel'yanenko

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.


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

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

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

Nature ◽  
1918 ◽  
Vol 101 (2545) ◽  
pp. 447-449 ◽  
Author(s):  
HAROLD JEFFREYS

1988 ◽  
Vol 7 (1) ◽  
pp. 38-47
Author(s):  
C. P. Snyman

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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