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Extra Giant Planet May Have Dwelled in Our Solar System
http://www.space.com/13584-extra-giant-planet-solar-system.html
The article also states that "a large number of free-floating worlds have recently been discovered in interstellar space, . . . ". I know that extrasolar planets have been detected, but around other stars, and there are small objects beyound Neptune and Pluto, but free planets traveling among the stars?!
From SwRI - http://swri.org/9what/releases/2011/giant-planet.htm
http://Earth'sky.org/space/was-a-fifth-gas-giant-ejected-from-our-solar-system
An article is supposed to be published in The Astrophysical Journal Letters this month, but I haven't found it.
http://www.space.com/13584-extra-giant-planet-solar-system.html
If that were the case, then where did they go?!Within our solar system, an extra giant planet, or possibly two, might once have accompanied Jupiter, Saturn, Neptune and Uranus.
. . . .
The article also states that "a large number of free-floating worlds have recently been discovered in interstellar space, . . . ". I know that extrasolar planets have been detected, but around other stars, and there are small objects beyound Neptune and Pluto, but free planets traveling among the stars?!
From SwRI - http://swri.org/9what/releases/2011/giant-planet.htm
http://Earth'sky.org/space/was-a-fifth-gas-giant-ejected-from-our-solar-system
An article is supposed to be published in The Astrophysical Journal Letters this month, but I haven't found it.
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