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This picture shows that there are three small regions in which the particles are trapped. These regions are the plasmaspheres.
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T.S. Huang

The Plasmaspheres of Neptune

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 leave the plasmasphere by being swept directly into the atmosphere.


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The Plasmaspheres of Neptune

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

Neptune's "Scooter"

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 Neptune when gas changed to ice

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

How a proto-planet sweeps up nearby material

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

The Structure of Neptune's Interior

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

The Atmosphere of Triton

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

Surface of Triton

Image processing can produce a view such as one might see if you were present on the surface of Triton. ...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF