Solar wind is a stream of charged particles ejected from a star. The interaction of the solar wind with a planet's magnetosphere produces auroras.
Gormaganders fed on alpha particles in solar winds. (DIS: "Magic to Make the Sanest Man Go Mad")
In 1979, the Earth probe Pioneer 11 documented solar wind buffeting the magnetosphere of Saturn. (TNG: "Loud As A Whisper" okudagram)
Solar wind was one of the factors that Harry Kim compensated for when he extrapolated a more accurate course for the Friendship 1 probe in 2378. (VOY: "Friendship One")