Subcategories:
You can see the full category hierarchy on the Category Map.
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| 100% | EARTH | Executes Annual Revolution Through Heavens | Tony McCoy O'Grady | 
| 88% | JUPITER | Jeopardy Ultimate Prospect If Travellers Ever Reach (it) | Tony McCoy O'Grady | 
| 100% | MARS | Many Anticipate Raiders Soon! | Tony McCoy O'Grady | 
| 100% | MARS (2) | Mountainous And Really Sandy | Philip Edwards (The planet Mars is home to Olympus Mons, at 24 km high, the highest mountain known.) | 
| 100% | MARS (3) | Mostly A Red Surface | Sporkmaster | 
| 88% | MERCURY | Making Exploratory Reconnoiters Considered Unlikely in Recent Years | Tony McCoy O'Grady | 
| 100% | NEPTUNE | Nearer Earth Perhaps Than Universe's Next Entity | Tony McCoy O'Grady | 
| 100% | PLANETS | Probably Lifeless Aggregations Now Encircling The Sun | Tony McCoy O'Grady | 
| 100% | PLANETS (2) | Perceptually Lazy At Nighttime Exclaim They're Stars | Angela Brett | 
| 100% | PLUTO | Planetary Location Universally Thought Outermost | Tony McCoy O'Grady | 
| 100% | SATURN | Studies Attempt To Understand Ring Network | Tony McCoy O'Grady | 
| 86% | URANUS | Until Recently A Neighbour Unseen (or) Suspected | Tony McCoy O'Grady | 
| 100% | VENUS | Volcanic Environment Near Unbearable Sunshine | Tony McCoy O'Grady |