Editing Interplanetary medium (section)

{{short description|Material which fills the Solar System}}
{{More citations needed|date=July 2007}}

[[File:Heliospheric-current-sheet.gif|thumb|upright=1.3|The [[heliospheric current sheet]] results from the influence of the [[Sun]]'s [[rotating magnetic field]] on the [[Plasma (physics)|plasma]] in the interplanetary medium.<ref>{{cite web|url=http://quake.stanford.edu/~wso/gifs/HCS.html|archive-url=https://web.archive.org/web/20060901124602/http://quake.stanford.edu/~wso/gifs/HCS.html|url-status=dead|archive-date=1 September 2006|title=Heliospheric Current Sheet|date=1 September 2006}}</ref>]]

The '''interplanetary medium''' ('''IPM''') or '''interplanetary space''' consists of the mass and energy which fills the [[Solar System]], and through which all the larger Solar System bodies, such as [[planet]]s, [[dwarf planet]]s, [[asteroid]]s, and [[comet]]s, move. The IPM stops at the [[Heliopause (astronomy)|heliopause]], outside of which the [[interstellar medium]] begins. Before 1950, interplanetary space was widely considered to either be an empty vacuum, or consisting of "[[Aether theories|aether]]".