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#1
May 11th 18, 05:50 PM
posted to alt.astronomy
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What Sun are they referring to?
On Friday, May 11, 2018 at 12:10:40 AM UTC-5, The Starmaker wrote:
"The International Astronomical Union (IAU) defined in August 2006 that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun,..." What Sun are they referring to???? "Celestial body" is kind of vague. A comet is not a planet. Neither is an asteroid. 
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