For 10 points, identify this two word term which describes the stream of particles ejected by the sun's corona.
A spiral associated with it is named for Eugene Parker who noted the similarity between Biermann and Chapman's theories for this phenomenon. First observed by the Lunik II satellite, comprehensive information about it was gathered by Mariner 2, which noted the direction of the flux of positive ions. The discontinuity formed by its interaction with a planetary magnetic field is called the bow shock, and its radiation pressure causes comets to have tails. For 10 points, identify this two word term which describes the stream of particles ejected by the sun's corona.
A spiral associated with it is named for Eugene Parker who noted the similarity between Biermann and Chapman's theories for this phenomenon.
solar wind