What planets have a strong magnetic field?

The planets with strong magnetic fields include Jupiter, Saturn, Uranus, and Neptune. Jupiter has the strongest magnetic field of any planet in the solar system, generated by its rapid rotation and large metallic hydrogen core. Saturn also has a significant magnetic field, while Uranus and Neptune have more complex and tilted magnetic fields, likely due to their unique internal structures. In contrast, Earth has a moderate magnetic field, while Mercury and Venus have very weak or negligible magnetic fields.