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Photo: New planet discovered in "habitable zone" of a sun 600 light-years away - WAX20111206202 - UPI.com
![Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Solar System Radius= light years An arrow where the tenth planet is and maybe how small. - ppt download Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Solar System Radius= light years An arrow where the tenth planet is and maybe how small. - ppt download](https://slideplayer.com/5182284/16/images/slide_1.jpg)
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Solar System Radius= light years An arrow where the tenth planet is and maybe how small. - ppt download
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