Science quiz
Which planet does this moon orbit? Sort the moons
Twenty three of the best known moons. A moon appears and you click the world it orbits.
- Format
- Sort into groups
- Items
- 23 to sort
- Limit
- 1:55
- Level
- Medium
- Checked
- 2026.10.03
- Items
- 23
- Groups
- 7
- Time limit
- 1:55
- A miss
- 2 tries, then the answer is shown
- Each moon appears in turn. Click its world, or press its number.
- The groups never move, so the number keys are quick.
- Skip (0) sends a prompt to the back of the queue.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Click the world each moon orbits. The groups appear when you start.
About this quiz
A sorting round built on the list behind Ribbia's Major moons of the solar system quiz: 23 entries in 7 groups. A miss never passes in silence: the right group is shown before the next entry.
- Saturn has the most moons in this set: seven.
- Pluto is a dwarf planet, and its moon Charon is here too.
Sources
- [1]NASA. Jupiter moons.
- [2]NASA. Saturn moons.
- [3]NASA. Uranus moons.
- [4]NASA. Neptune moons.
- [5]NASA. Moons of our solar system.
Note on the data. Entries and groups are read from that quiz, row for row. Each moon and the world it orbits was checked against NASA's moon pages on 3 October 2026. The selection is ours: the Galilean moons, seven large moons of Saturn, the five major moons of Uranus, three moons of Neptune, and the moons of Earth, Mars and Pluto's Charon. Total moon counts are left out because they keep changing.
Last checked October 3, 2026
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