Friday, March 16, 2012

Some Planets Are Alien Invaders

In "Some Planets Are Alien Invaders", Science magazine explores the possibility of the existance of a super-large gas giant in our own solar system, far beyond Pluto.

The impetus for this theory is the number of exoplanets we have been discovering revolving around neighboring stars, more than 100 sun-Earth distances (AUs) from their stars. The Nature article, "So many lonely planets with no star to guide them", supports that the number of free floating planets in the galaxy may be more abundant than stars.

Ready for the big stuff? This theory isn't new. Nemesis theory has been bandied about since the eighties, suggesting that a (far away) brown or red dwarf may be orbiting the sun to explain for the elliptican nature of our planets' orbits and the large number of comets we see originitating from the oort cloud.

In the immortal words of Obi Wan Kenobi, "That's no moon".

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