HELIOPAUSE

Pronunciation (US):

(GB):

 Dictionary entry overview: What does heliopause mean? 

• HELIOPAUSE (noun)
  The noun HELIOPAUSE has 1 sense:

1. 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 from the sun and the radiation from other stars meet

  Familiarity information: HELIOPAUSE used as a noun is very rare.

 Dictionary entry details 

• HELIOPAUSE (noun)

Sense 1

Meaning:

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 from the sun and the radiation from other stars meet

Classified under:

Nouns denoting spatial position

Hypernyms ("heliopause" is a kind of...):

bound; boundary; bounds (the line or plane indicating the limit or extent of something)

 Context examples 

The fact that Voyager 2 may be approaching the heliopause six years after Voyager 1 is relevant, because the heliopause moves inward and outward during the Sun's 11-year activity cycle.

(NASA Voyager 2 Could Be Nearing Interstellar Space, NASA)

That was about three months before Voyager 1 crossed the heliopause and entered interstellar space.

(NASA Voyager 2 Could Be Nearing Interstellar Space, NASA)

Voyager scientists have been watching for the spacecraft to reach the outer boundary of the heliosphere, known as the heliopause.

(NASA Voyager 2 Could Be Nearing Interstellar Space, NASA)