Definition of heliopause in English English dictionary
The boundary of heliosphere where the Sun's solar wind is stopped by the interstellar medium
the boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind and the wind from other stars meet
Boundary between the heliosphere the teardrop-shaped region around the Sun created by the solar wind and filled with solar magnetic fields and outward-moving gas and the zone of transition to the interstellar medium. Its tail is estimated to reach 50-100 astronomical units from the Sun, encompassing the orbits of all the major planets. Its shape changes, influenced by a wind of interstellar gas produced by the Sun's motion through it