| 100% | HERSCHEL | 8 | William —, discoverer in 1781 of the planet Uranus |
| 59% | HERSCHEL | 8 | William —, astronomer who discovered the planet Uranus in 1781 |
| 46% | SAND | 4 | Terrain of the planet Arrakis in "Dune" |
| 45% | LUCIFER | 7 | Latin name of the planet Venus seen in the morning |
| 43% | KENT | 4 | Clark of the Daily Planet, in DC comics |
| 43% | SAND | 4 | Terrain of the desert planet Arrakis in "Dune" |
| 43% | DESIRE | 6 | Name of the Streetcar in Tennessee Williams' play |
| 42% | LOIS | 4 | Reporter Lane of the Daily Planet, in Superman stories |
| 42% | ROSENCRANTZ | 11 | One of the courtiers in William Shakespeare play Hamlet |
| 42% | HYDROGEN | 8 | One of the main elements in gas giant planets |
| 42% | HANK | 4 | Williams in the Country Music Hall of Fame |
| 41% | HUR | 3 | One side of the hyphen in a famous William Wyler movie |
| 41% | ASTRONOMY | 9 | The study of planets and other objects in space |
| 41% | ETERNIA | 7 | Central planet in Masters of the Universe |
| 41% | EIGHTH | 6 | Like Neptune, in the list of planets |
| 41% | EIGHT | 5 | Number of planets in the solar system |
| 40% | TED | 3 | Slugger Williams in the Baseball Hall of Fame |
| 40% | THEAPES | 7 | "War for the Planet of ___," an upcoming instalment in the series: 2 wds. |
| 40% | IRAS | 4 | One of the attendants of Cleopatra in William Shakespeare play Antony and Cleopatra |
| 40% | COBWEB | 6 | One of the fairies in William Shakespeare play A Midsummer Night's Dream |
| 40% | TITANIA | 7 | Queen of the fairies in William Shakespeare play A Midsummer Night's Dream |
| 40% | MUSTARDSEED | 11 | One of the fairies in William Shakespeare play A Midsummer Night's Dream |
| 40% | PROSPERO | 8 | Father of Miranda in William Shakespeare play The Tempest |
| 40% | FLEANCE | 7 | Son of Banquo in the William Shakespeare play Macbeth |
| 40% | OPHELIA | 7 | Daughter of Polonius in the William Shakespeare play Hamlet |
| 40% | POLONIUS | 8 | Father of Ophelia in the William Shakespeare play Hamlet |
| 40% | MIRANDA | 7 | Daughter of Prospero in William Shakespeare play The Tempest |
| 40% | NINE | 4 | Number of planets in the solar system, before 2006 |
| 40% | HANK | 4 | Singer Williams in the Country Music Hall of Fame |
| 40% | IRAS | 4 | One of the attendants of Cleopatra in the William Shakespeare play Antony and Cleopatra |