Read the rule before answering
Compare orbital order outward from the Sun. The boundary planet itself is excluded, and distance from Earth today is irrelevant.
Six untimed questions, starting with this one.
Check an answer here
Check this question’s accepted set without submitting to a game or opening the full answer list.
Only your submitted spelling will be checked. Other answers stay hidden.
Read the lesson — reveals answers & strategy
Understand the boundary
Only Jupiter, Saturn, Uranus and Neptune are beyond Mars in this eight-planet sequence. The question is about order from the Sun, not which planet is farther from Earth today. The four include two gas giants and two ice giants.
Verify the facts: NASA · Our solar system ↗
Choose an answer for your goal
Split the four into two pairs when practicing: Jupiter–Saturn, then Uranus–Neptune. This gives you a backup pair if one name will not come to mind under the timer. Neptune’s 92 and Uranus’s 87 are fixed ratings in our set; a higher rating is not evidence of a smaller measured audience share.
Worked examples — reveals answers
- Uranus · Accepted
- Beyond Mars in orbital order; an ice giant.
- Mars · Outside this set
- The boundary says farther than Mars, so the boundary planet itself is excluded.
- Pluto · Outside this set
- Distance alone is insufficient: the rule also excludes dwarf planets.
Practice the distinction
Try an inner planet in the checker and read the scope feedback. Then submit an eligible outer planet. This contrast practices the restriction instead of simply recalling a familiar astronomy word.
Try it in the checker ↑Give me a hint — no answer revealed
Start with the full category, then apply the exact boundary: Only the four outer planets. Dwarf planets do not count. You only need one qualifying answer. A longer name is not automatically rarer.
Reveal a verified practice pick
This pick belongs to the selected question’s answer set. Points are a fixed knowledge rating.
Reveal a fast high-scoring answer
Shortest accepted input at 65+ points
UranusUranus · 87 points · 6 characters
Uranus is planet 7 from the Sun. Dwarf planets are a separate classification.
Highest fixed score
Neptune92 points · Shortest accepted spelling: Neptune
These are editorial points, separate from real player choice counts.
Reveal all 4 practice answers
Filter by a name or listed alias. Scores are fixed knowledge ratings.
4 accepted answers
No answers match these filters. Try another spelling or a lower minimum score.
What players actually choose
– UTC · 340 recorded daily rounds. Source: Krillionio daily submissions. Skips and timeouts are included in the denominator; practice and Battle are excluded.
294 / 340 rounds ended with an accepted answer (86.5%). Average: 62.3 fixed points.
Compare observed choices — reveals answers
Question quality signals
These measurements cover completed daily rounds recorded with timing and rejection details. Older rounds without those fields are excluded. At least 20 measured rounds are required per question.
Review thresholds: below 20% accepted, at least 40% timed out, or at least 30% of rounds with an unlisted input. These flags suggest checking the wording and answer coverage; they do not prove an answer is wrong or change points automatically. Abandoned rounds and practice attempts are not included.
How these statistics work
- What is counted
- Source: Krillionio daily submissions. Skips and timeouts count as rounds; practice and Battle are excluded.
- When comparisons appear
- A question needs at least 20 recorded rounds. An answer also needs at least 5 recorded choices within that question.
- What the data can tell you
- These anonymous browser records are not verified unique people or a representative survey. The player rarity index does not change game points or predict the original Krillion game. Raw submissions stay private.
Rule examples & common mix-ups — may reveal answers
- The eight planets and dwarf planets are separate sets. A moon belongs to neither planet set; apply any size, position or name-length condition as well.
These notes explain the question boundary; they are not a ranking of player mistakes.
Why these answers qualify
Each entry belongs to the bounded set defined by the prompt. The named source supports the underlying facts; our editorial scoring is a separate layer.
Source: NASA · Our solar system ↗
Reference version: 2026-09-13. See our answer policy for how we handle aliases and omissions.