space around the Sun". In 2002, Akasofu stated "The view that interplanetary space is a vacuum into which the Sun intermittently emitted corpuscular streams was changed radically by Ludwig Biermann (1951, 1953) who proposed on the basis of comet tails, that the Sun continuously blows its atmosphere out in all directions at supersonic speed" (Syun-Ichi Akasofu, Exploring the Secrets of the Aurora, 2002) See also Interplanetary dust cloud Interplanetary magnetic field Interstellar space Interstellar medium Interstellar dust Intergalactic space Intergalactic medium Intergalactic dust List of plasma (physics) articles Space physics References External links Bill Arnett's The Nine Planets page about the interplanetary medium Outer space Plasma physics Planetary systems Solar System Space plasmas