heliopause

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Related to heliopauses: Bow shock, interstellar, termination shock

heliopause

(hee -lee-oh-pawz) See heliosphere.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

heliopause

[′hē·lē·ə‚pȯz]
(astronomy)
A shock front about 50 astronomical units from the sun, where the thermal pressure of the interstellar gas which surrounds the solar system overcomes the pressure of the solar wind, which is mostly ram pressure due to its high-velocity flow.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.