| MDCX | Year Galileo discovered the Galilean moons of Jupiter |
| CALLISTO | One of the Galilean moons of Jupiter (8) |
| EUROPA | One of the Galilean moons of Jupiter (6) |
| SATURN | Galileo discovered its rings |
| AMALTHEA | Largest of the non-Galilean moons of Jupiter, discovered by Edward Emerson Barnard in 1892 (8) |
| FOUR | Number of Galilean moons of Jupiter |
| GANYMEDE | One of the Galilean moons, it is also Jupiter's largest (8) |
| JOVIAN | Like the Galilean moons |
| GALILEO | Forename of the discoverer of the isochronism of a pendulum who improved upon the design of the refracting telescope to observe the four largest moons of Jupiter (7) |
| ADRASTEA | Smallest of the four inner moons of Jupiter, discovered by the space probe Voyager 2 in 1979 (8) |
| MOONS | Celestial bodies such as the Galilean satellites Io, Europa, Ganymede and Callisto (5) |
| METIS | The innermost of the known moons of Jupiter (5) |
| TIGHTEN | Galilean moon reported to be secure (7) |
| RIOCUARTO | Curious curator finds Galilean moon in Argentinian city (3,6) |
| IOWA | Galilean moon has intermittently weak state (4) |
| MUNRO | Nobel Prize-winning author of Lives of Girls and Women and The Moons of Jupiter; or, a Scottish mountain such as Ben Nevis or Lochnagar (5) |
| ELARA | Eighth-largest of the 95 known moons of Jupiter, discovered by US astronomer Charles Dillon Perrine in 1905 (5) |
| THEBE | Outermost of the four inner moons of Jupiter, discovered by US astronomer Stephen P. Synnott in 1979 (5) |
| EDITION | Nearly do away with one-track mind, strangely transfixed by Galilean moon - an early 7Dn work (10,7) |
| KILMARNOCK | Nearly do away with one-track mind, strangely transfixed by Galilean moon - an early 7Dn work (10,7) |
