1. solar wind
Wikipedia definition
2. Solar windThe solar wind is a stream of charged particles ejected from the upper atmosphere of the Sun. It mostly consists of electrons and protons with energies usually between 1.5 and 10 keV. The stream of particles varies in temperature and speed over time. These particles can escape the Sun's gravity because of their high kinetic energy and the high temperature of the corona. The solar wind creates the heliosphere, a vast bubble in the interstellar medium that surrounds the Solar System.
Read “Solar wind” on English Wikipedia
Read “太陽風” on Japanese Wikipedia
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