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Jupiter's protective pull questioned

Gas giant's role in preventing asteroid collisions under scrutiny.

For more than a decade many astronomers have thought of Jupiter as a protective big brother for planet Earth. The gas giant's gravitational pull is believed to slingshot incoming Earth-threatening objects out of the Solar System. This has led many to suppose it shielded the young Earth from impacts, helping to support conditions for life.

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Posted by Nicola Jones on August 24, 2007 04:48 PM |

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The gas giants tend to rapidly evolve out or evolve in along spiral paths depending on the initial condition at the time of complete formation of the Gas Giants.
In all Solar Systems gas giants are born the earliest and the lightest terrestrial planet at the end.
In our Solar System Jupiter was born the first and it evolved out along a spiral path. Saturn was born 60My later.
If the evolution is calculated then exactly 700-800My later 1:2 Mean Motion Resonance occurred which lead to Heavy Bombardment era.
I will soon be submitting this paper.

Posted by: Bijay Kumar Sharma | August 28, 2007 04:03 AM

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