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Hypothetical Planets |
| Stories (20 URLs) about objects that were once thought to exist by astronomers, but which later 'vanished.' (by Paul Schlyter) |
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Hypothetical Planets |
| The same as the previous page, but only 10 URLs. Bill Arnett converted text by Paul Schlyter. |
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Hypothetical planetary object |
| An article on hypothetical planets by Wikipedia, the free encyclopedia. |
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