Jupiter vs Saturn
| Jupiter | Saturn | |
|---|---|---|
| Equatorial radius | 69,911 km | 58,232 km |
| Mass | 1.898 × 10²⁷ kg (318 Earth) | 5.683 × 10²⁶ kg (95 Earth) |
| Mean density | 1.33 g/cm³ | 0.69 g/cm³ (would float in water) |
| Day length | 9 h 56 min | 10 h 33 min |
| Year length | 11.86 Earth years | 29.46 Earth years |
| Confirmed moons | 95 | 146 (most of any planet) |
| Largest moon | Ganymede (5,268 km — larger than Mercury) | Titan (5,150 km — has nitrogen atmosphere) |
| Ring system | Faint, mostly dust | Bright, complex, ~280,000 km across |
| Visible features | Cloud belts, Great Red Spot | Rings, Cassini division, hexagonal pole storm |
| Magnetic field strength | 14× Earth's | ~1× Earth's |
Verdict
Jupiter is by far the more massive and dynamic — its magnetosphere alone would appear larger than the full Moon if visible. Saturn wins the visual prize through any telescope: the rings are the most spectacular sight in amateur astronomy.