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planetary-mass object

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The Starmaker

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Jun 23, 2017, 4:31:45 PM6/23/17
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Planet 10? Another Earth-Size World May Lurk in the Outer Solar System
A planetary-mass object the size of Mars may be lurking in the outer solar system.

https://www.space.com/37295-possible-planet-10.html
http://www.newsweek.com/planet-10-lurking-edge-solar-system-628517


What is a "planetary-mass object"????





There are billions of planets out there, but the ones closest to us are ...invisible,...Why do you suppose that is?

All the billions of planets have life, but the ones closest to us have no life,...Why do you suppose that is?





What is a "planetary-mass object"????


my guess it's just another new word for...an asteroid.
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