Cosmic Ray Electrons Seen by Voyager

Cosmic ray electrons seen by the Voyager spacecraft continue a chain of discoveries, as the spacecraft explore the frontier of interstellar space.

Even at the frontier of interstellar space, the Voyager spacecraft are still making new findings driven by storms on the distant Sun. Image credit: The Cosmic Companion / Created in JPL viewer.

Just beyond the reach of charged particles from our Sun (which is, in some ways, the edge of our solar system), the Voyager spacecraft have witnessed a previously-unseen phenomenon for the first time.