Do Jovian planets have a magnetic field?

SUMMARY: All four jovian planets have surrounding magnetic fields that create magnetospheres in response to pressure from the solar wind. ... many of the charged particles trapped in Jupiter's magnetosphere come from the solar wind; however, Jupiter has an extra source of particles that other planets do not have. read more

The stronger the magnetic field, the larger the magnetosphere. Some 20,000 times stronger than Earth's magnetic field, Jupiter's magnetic field creates a magnetosphere so large it begins to avert the solar wind almost 3 million kilometers before it reaches Jupiter. read more

Answer: The global magnetic field and Jupiter's rapid rotation It traps far more charged particles than Earth's - Io contributes many additional particles They create auroras and belts of intense radiation. The other jovian planets have much weaker magnetic fields and magnetosphere. read more