Skip to content
AsteriaStar
Space-weather phenomenon

Heliopause

The outer boundary of the heliosphere, where the outward pressure of the solar wind balances the pressure of the interstellar medium — the edge of the Sun's domain, crossed by the two Voyager spacecraft.

Imagery

Voyager 40th Anniversary at Air and Space Museum

Thomas Zurbuchen, NASA associate administrator, Science Mission Directorate, gives opening remarks at an event to celebrate the 40th Anniversary of the launch of the Voyager 1 and 2 missions, Tuesday, September 5, 2017…

2017

NASA · NASA media (public domain)

Source archive ↗

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • NASANational Aeronautics and Space Administration

    Mission data, planetary science, space telescopes, and public-domain imagery.

    Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.