↑ What is Solar Wind?

By Doron Tal, 4X4XM

The solar wind comprises a steady flow of charged particles from the sun's corona, predominantly electrons, protons, and alpha particles.

These particles are ejected from the Sun at high speeds, ranging from 400 to 800 km/s and travel through the solar system.

Solar Wind
An illustration of the solar wind and the Earth's magnetosphere, showing how the solar wind rearranges the magnetosphere. It compresses the magnetic field on the side facing the sun while elongating it on the opposite end.

The solar wind is a major factor affecting the space environment around the Earth and other planets. On Earth it causes phenomena such as auroras, geomagnetic storms, and radiation belts.

Discover more about the Solar Wind, its variations, and its impact on HF radio transmission.
See also an index for HF Radio Propagarion.


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The Understanding HF Propagation Project provides radio amateurs with a detailed overview and tutorials on several aspects of HF propagation.

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