Alternate Definitions for Heliosphere

The heliosphere is our entire solar system, as defined by the bubble created by the outflow of particles from the sun called the solar wind, which streams far past the outermost planets, six to nine billion miles away from the sun. Solar particles speed outward from the sun, pushing back the material in the rest of space, known as the interstellar medium. The boundary between the two defines the edges of the heliosphere.

The solar atmosphere extending roughly fromthe outer corona to the edge of the solar plasma at the heliopauseseparating primarily solar plasma from interstellar plasma.

The vast, three-dimensional region of space around the Sun filled with the solar wind and the remnant of the solar magnetic field carried in it. It is bounded by the heliopause, which is estimated to be 100 astronomical units or more from the Sun. The radius of the heliosphere is expected to vary with the solar cycle. The heliosphere may be very elongated owing to the presence of an interstellar wind of neutral hydrogen flowing from the direction of the Galactic center.

The vast, three-dimensional region of space around the Sun filled with the solar wind and the remnant of the solar magnetic field carried in it. It is bounded by the heliopause, which is estimated to be 100 astronomical units or more from the Sun. The radius of the heliosphere is expected to vary with the solar cycle. The heliosphere may be very elongated owing to the presence of an interstellar wind of neutral hydrogen flowing from the direction of the Galactic center.