I really wish these bon voyage articles about Voyager would talk more about science learned after the planet flybys. There were plenty of unknowns regarding the heliopause and the readings before and after crossing it[0]. The readings showed it wasn't just a fade to black kind of experience, and proved to be quiet a bit of activity going on there.

[0]https://www.jpl.nasa.gov/news/voyager-1-2-discovers-evidence...

Like this: https://www.iflscience.com/nasas-voyager-spacecraft-found-a-...

There apparently are hot plasma at edge of our solar system.