Labels:circle | clock | monitor | quadrangular prism | road | sky | tree OCR: HELIOS PFFRE Data The heliopause is the outer SOLAR APEX TERMINATION most boundary of the solar wind SHOCK where the interstellar medium HELIOPAUSE restri icts the outward flow of the solar wind and confines it within INTERSTELLAR magnetic The bubble solar called wind S the made helio- up WINDS VOYAGER sphere. of electrically charged atomic part EARTH icles composed primarily of jon SATURN ized hydrogen, that stream out SUN ward from the Sun. SOCHI PIONEER URANUS PIONES is has Exactly been where one of the the great heliopause un- NEPTUNE JUPITER PLUTO physics. answered By questions studying in the space radio emissions scientists now theorize the heliopause exists some 90 to VOYAGER 120 AU) from the Sun. The Voy- ager probes which are now in the process of leaving the solar system, should ...