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Re: '10th planet' has moon companion
Apparently not, according to that article. Venus and Mercury don't have moons.
I'm confused about this 10th planet now. When they announced it in July I thought it was confirmation of a 'planet' discovered beyond Pluto IIRC last year and dubbed 'Sedna'. Now this new planet is being called 'Xena' but this is still only a temporary code name.
What happened to Sedna?
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