This picture is from a model of how the earth's magnetic field is generated.
Click on image for full size
Glaztmeir and Roberts of LANL
The Generation of Neptune's Magnetosphere
Magnetospheres are generated with 1.) magnetic materials and 2.) with motions within the magnetic material. As long as a planet has these two ingredients scientists believe that it can generate a magnetic field.
The Earth-like planets generate magnetospheres within the iron cores at their centers. However, Neptune has almost no iron core.
The magnetic material of Neptune is found within its icy shell. Motions within that shell produce the magnetic field.
Shop Windows to the Universe Science Store!
Our online store
includes issues of NESTA's quarterly journal, The Earth Scientist
, full of classroom activities on different topics in Earth and space science, ranging from seismology
, rocks and minerals
, and Earth system science
You might also be interested in:
There is no surface to the giant planets, only a gradual change from the atmosphere, as pictured in this drawing. Therefore the giant planets do not have strict layers, as the earth-like planets do. Ice...more
A magnetometer is an instrument for measuring magnetic fields. Many spacecraft carry magnetometers to measure the magnetic fields around planets. When a spacecraft makes those measurements, what do the...more
Neptune has three tiny plasmaspheres. The rings of Neptune sweep away much of the particles in the area. Particles enter the plasmasphere from the atmosphere as well as the magnetotail. Particles might...more
One of the many cloud patterns of Neptune is the "scooter" which was discovered by Voyager in 1989. In this image, the Great Dark Spot is found in the upper left of the image, and just below the Spot is...more
The position of the planets in the solar nebula greatly affected their 1. size and 2. composition. This is because of the effect of how cold it was in the nebula. 1. The nebula was a lot warmer close to...more
As shown in this picture, while they were forming in the solar nebula, the nuclei of the planets-to-be (called protoplanets) drew material to themselves from the cloud of gas and dust around them. The...more
Triton is by far the largest moon of Neptune. It is slightly smaller than Earth's Moon. The surface of Triton is colder than the surface of any other planet or moon in our Solar System. It is so cold on...more