A magnetic field is not really made of any matter, but is more a zone or region of the influence of a magnet or movement of an electric charge. The reason something charged or magnetized passing through a magnetic field will feel a force is explained by the exchange of force carriers (with the electromagnic force, these are photons).
The Earth's magnetic field for example is thought to be created by the motion, including convection and spin, of liquid metal, mostly iron alloys, in the outer core, acting like a dynamo.
Flowing liquid iron in outer core of the Earth.
magnet
moons and magnetic fields ;D
Yes - several planets have magnetic fields that do not even vaguely resemble Earth's current field.
The dynamo. For terrestrial planets, the dynamo is a molten core of nickel-iron. Mercury and Earth have fairly strong dynamos and therefore fairly strong magnetic fields. Venus and Mars do not, and have only weak magnetic fields.
The magnetic fields are not aligned with the rotational axis of the planet and they are not located at the center of the planet.
The four Jovian planets in our solar system are Jupiter, Saturn, Uranus and Neptune. The four terrestrial planets are Earth, Venus, Mars and Mercury. The difference between the Jovian planets and the terrestrial planets is that Jovian planets are enormous and made of gasses and ices while terrestrial planets are relatively small and made of rocks and metals. Other differences are that terrestrial planets have high densities, rotate slowly, have no moons or magnetic fields and have thin atmospheres (Earth is an exception because it has a moon and a magnetic field), while Jovian planets have low densities, rotate rapidly, have many moons and a magnetic field and have thick atmospheres.
yes all the other planets have magnetic fields except venus because it rotates to slowly
it affects the other planets and its rotation
No. The magnetic fields of objects such as planets are due to currents withing their molten interiors. Asteroids are completely solid and so do not have magnetic fields.
All planets have magnetic fields. I believe that in most cases, this magnetic field can act as a shield.
Neptune, Uranus, Saturn, Jupiter, and Earth all have magnetic fields. Mercury has a very weak magnetic field.
I assume you mean "planets". Yes, other planets have magnetic fields, too. Jupiter, for example, has a very strong magnetic field.
moons and magnetic fields ;D
Yes - several planets have magnetic fields that do not even vaguely resemble Earth's current field.
Planets are too far from each other to have any observable interaction of their magnetic fields.
Yes. They don't have actual magnets, but they do have "magnetic fields". Other planets with magnetic fields are Mercury, Jupiter, Saturn, Uranus and Neptune.
The dynamo. For terrestrial planets, the dynamo is a molten core of nickel-iron. Mercury and Earth have fairly strong dynamos and therefore fairly strong magnetic fields. Venus and Mars do not, and have only weak magnetic fields.
The magnetic fields are not aligned with the rotational axis of the planet and they are not located at the center of the planet.