We have the first images of the poles of Ganymede – there are plasma rain

The spacecraft NASA’s “Juno” (“Juno”) for four years revolves around Jupiter, along the way, watching his companions. But now he first photographed from a distance of 100 000 km of the North pole of one of them – Ganymede, where there are constant plasma “rains”.

Ganymede is extremely interesting. It is the largest moon in the Solar system – its diameter is 5267 miles (that is 8% larger than the diameter of mercury). It is composed of water ice and frozen silicate rocks. Some scientists believe that beneath the surface of Ganymede can be made from the water of the ocean.

Among his many brothers in the Solar system, it stands out the presence of its own magnetosphere, which, presumably, was due to convection (a type of heat transfer when energy is transferred by the flow of gas or liquid) in its saturated liquid iron core.

A little bit about plasma “rains”. On Earth, where there is atmosphere, solar radiation is ionized, creating a distinctive glow at the poles. Pictures “Juno” showed that deprived of the atmosphere of Ganymede streams of charged particles – in essence, this plasma “rains” under the influence of a magnetic field to freely rush to the poles, turning the ice into a friable mass, while at the equator it has a regular crystalline structure.

In NASA hopes that the results obtained with the “Juno” information will expand the understanding of the evolution of all 79 of the moons of Jupiter since their inception and will help in the preparation of future missions, in particular, European American JUICE and Europa Clipper, to be held respectively in 2022 and the years 2023-25.

Leave a Reply

Your email address will not be published. Required fields are marked *


Physicists have learned to turn plastic bottles in supercapacitors

Scientists from the University of California, riverside have developed a technology to produce components for supercapacitors from regular waste. We are talking about polyethylene terephthalate or PET, which is made most of plastic bottles. This material is from an economic point of view is significantly superior to high-tech raw materials, like graphene or carbon nanotubes. […]

Looks like a screwdriver of the XXI century

Recently Techcult wrote about the drill of the XXI century with a touchscreen and lasers. But the screwdriver is traditionally considered to be more simple, reliable and very straightforward tool. What similar high-tech screwdriver advanced Italian production? And it is similar to the Kinetic device Driver. Kinetic Driver designed by the Italian designer Giacomo Di […]

Our Solar system is most similar to space croissant

The sun emits powerful electromagnetic winds that envelop the planet in our solar system like a giant bubble. This magnetic bubble is called the heliosphere and protects the planet from dangerous space radiation. Scientists have long believed that the heliosphere is in the form of a comet – with a distinct nose and long flowing […]

Some homemade masks turned out to be more dangerous than no

Despite the fact that the industry has recovered from the shock of the first days of the pandemic COVID-19 and now produces enough facial masks of different types, most people in the world due to various reasons use homemade versions. Everyone understands that they are less effective than professional medical model, but the question is: […]