The roughly spherical volume of space, centered on the sun and extending into the Kuiper belt, that is composed of particles emitted from the sun and forms a bubble that displaces the interstellar medium.
The region around the sun, extending beyond Pluto, characterized by the presence of the solar magnetic field and the solar wind.
The large, roughly elliptical region of space around the Sun through which the solar wind extends and through which the Sun exerts a magnetic influence. The heliosphere extends well beyond the orbits of the planets, and its shape and extent fluctuate with changes to the solar wind and other influences. &diamf3; The boundary between the heliosphere and interstellar space is known as the heliopause .
Origin of heliosphere
- helio- + -sphere