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Astronomers find seven Earth-size planets orbiting 'nearby' star 40 light-years away | South China Morning Post
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Mars will light up the night sky as it comes closest to Earth on October 6 when it's 38.6 million miles away | MEAWW
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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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