ATMOSPHERIC PHENOMENA & STRUCTURES A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site plasmasphere A donut-shaped region of relatively cool (2,000 K), dense (tens to thousands of particles per cm³) plasma within Earth's magnetosphere that extends out to a distance of about 4 Earth radii (25,000 km) and is bounded by the inner Van Allen belt. The outer limit of the plasmasphere is called the plasmapause. Related category    • ATMOSPHERIC PHENOMENA AND STRUCTURES Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP