VISUAL ARCHIVE / IMAGE STORY
A Boundary Without a Solid Wall
There is no solid wall around the solar system.
There is no solid wall around the solar system. The heliopause is a dynamic boundary formed where the pressure of the solar wind balances that of the surrounding interstellar plasma and magnetic field. Voyager 1 crossed it in August 2012, revealing a surprisingly distinct transition between two environments.
THE OBSERVATION
What we can actually see.
NASA’s April 2026 update records the shutdown of Voyager 1’s Low-energy Charged Particles instrument, leaving plasma-wave and magnetic-field science. The radioisotope power supply loses roughly four watts of electrical output each year. An August update reports a power-saving reconfiguration completed on Voyager 2 while the corresponding Voyager 1 work was still planned in that account.
THE ILLUSTRATION
What the artwork imagines.
There is no solid wall around the solar system. The heliopause is a dynamic boundary formed where the pressure of the solar wind balances that of the surrounding interstellar plasma and magnetic field. Voyager 1 crossed it in August 2012, revealing a surprisingly distinct transition between two environments. The viewpoint, illumination, colors and simultaneous arrangement are artistic choices. This is a cinematic illustration, not a direct instrument image or a quantitative reconstruction of every feature.
FROM THE ILLUSTRATED ARTICLE
The story that inspired it.
Voyager 1 can still probe plasma and magnetic fields beyond the heliopause, but keeping the spacecraft alive requires choices about which measurements survive. Mission longevity and the remaining science inventory are separate outcomes. This frame focuses on a boundary without a solid wall, within the complete illustrated article and its source-linked research context.
Read Voyager 1: The Space Between Stars Is Speaking. We're Running Out of Time to Listen.CHECK THE RECORD
The image interprets the research below. Follow the original work for the measurements and limits behind the scene.
NASA Shuts Off Instrument on Voyager 1 to Keep Spacecraft Operating NASA Engineers Help Prolong Voyager 2's Science MissionOTHER IMAGE STORIES
Keep looking.
Voyager Beyond the Heliopause
Electrical Waves in Interstellar Plasma
The Mark Shared by Titan and PlutoEXPLORE IN 3D / MAP 12
Locate the wider Galactic setting
Explore an illustrative Milky Way map. It does not supply a measured source location or live Voyager position.
Open Milky Way map