| 100% | PLUTO | 5 | It was demoted to "dwarf planet" in 2006 |
| 75% | PLUTO | 5 | Planet demoted to dwarf status in 2006 |
| 72% | CERES | 5 | It was upgraded from an asteroid to a dwarf planet in 2006 |
| 70% | PLUTO | 5 | Planet demoted to "dwarf planet" in 2006 |
| 66% | PLUTO | 5 | It was reclassified as a dwarf planet in 2006 |
| 57% | CERES | 5 | Dwarf planet in the asteroid belt that lent its name to the lanthanide element, Cerium |
| 56% | PLUTO | 5 | Planet that was demoted in 2006 |
| 53% | PLUTO | 5 | Planet that was reclassified as a dwarf planet in 2006 |
| 50% | PLUTO | 5 | Former planet which was reclassified as a dwarf planet in 2006 |
| 48% | MIR | 3 | It was made to fall in 2001 |
| 48% | MACAO | 5 | It was transferred to China in 1999 |
| 47% | FATE | 4 | It is said to be written in the stars |
| 47% | URL | 3 | It is seen in the clue to 21 Down |
| 46% | GIB | 3 | It was ceded to Brit. in the Treaty of Utrecht |
| 46% | UMAMI | 5 | It was added to create an everyday quintet in 1990 |
| 46% | VIE | 3 | Be in it to win it |
| 46% | PLUTO | 5 | "The ___ Files," Neil deGrasse Tyson novel featuring a dwarf planet in its title |
| 45% | ODYSSEUS | 8 | It was his idea to breach Troy in a giant horse |
| 45% | TOPIARY | 7 | It needs to be kept in shape |
| 45% | OLDSTYLE | 8 | In the way it used to be |
| 45% | USSR | 4 | It ceased to be in Dec. 1991 |
| 45% | PLUTO | 5 | Dwarf planet that lent its name to the radioactive chemical element, Plutonium |
| 45% | RADIO | 5 | It was used to play music for the first time in 1906 |
| 44% | SNIT | 4 | It's unpleasant to be in |
| 44% | SUN | 3 | Mercury is the closest planet to it |
| 44% | GROOVE | 6 | It's good to be in one |
| 44% | AYE | 3 | It's said to be in favor |
| 43% | SIN | 3 | What it is to kill a mockingbird, in "To Kill a Mockingbird" |
| 43% | DRONEBEE | 8 | Its purpose in life is to mate with a queen |
| 43% | RUT | 3 | It's frustrating to be stuck in one |