(Paper) Evidence of a Jovian Mass Solar Companion in the Oort Cloud? |
(Paper) Evidence of a Jovian Mass Solar Companion in the Oort Cloud? |
Apr 27 2010, 05:07 AM
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
[Posts moved from "INCOMING" discussion.]
... a new confirmation of the "Nemesis" theory Persistent Evidence of a Jovian Mass Solar Companion in the Oort Cloud |
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Oct 2 2010, 07:37 AM
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Member Group: Members Posts: 340 Joined: 11-April 08 From: Sydney, Australia Member No.: 4093 |
What's the Hillsphere of the Sun?
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Oct 2 2010, 08:00 AM
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
What's the Hillsphere of the Sun? From this quick Google grab: "If it is agreed to assume a Hill sphere for the boundaries of the solar system [230,000au], it is found that these boundaries extend to the nearest stars. However, stable motion of the planets (with direct motion) probably is possible only within the solar gravitational sphere. [4500au]" |
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