Voyager 1 Returning Science Data from All Four Instruments
blogs.nasa.gov
blogs.nasa.gov
Voyagers 1 & 2 are both in the final phase of their extended mission (the Voyager Interstellar Mission, or VIM) which is focused on collecting data from the interstellar medium. Their initial mission was completed with their respective flyby of the gas giants.
> It is appropriate to consider the VIM as three distinct phases: the termination shock, heliosheath exploration, and interstellar exploration phases. The two Voyager spacecraft began the VIM operating in an environment controlled by the Sun's magnetic field with the plasma particles being dominated by those contained in the expanding supersonic solar wind. This is the characteristic environment of the termination shock phase. At some distance from the Sun, the supersonic solar wind is held back from further expansion by the interstellar wind. The first feature encountered by a spacecraft as a result of this interstellar wind/solar wind interaction was the termination shock where the solar wind slows from supersonic to subsonic speed and large changes in plasma flow direction and magnetic field orientation occur.
> On Aug. 25, 2012, Voyager 1 flew beyond the heliopause and entered interstellar space, making it the first human-made object to explore this new territory. At the time, it was at a distance of about 122 AU, or about 11 billion miles (18 billion kilometers) from the sun. This kind of interstellar exploration is the ultimate goal of the Voyager Interstellar Mission. Voyager 2, which is traveling in a different direction from Voyager 1, crossed the heliopause into interstellar space on November 5, 2018.
The Mission Status page[2] is also really neat to look at. Although each probe is down to about half of its original sensor stack, they both still have charged particle, low energy cosmic ray, magnetometer and plasma sensors running, and they're both still collecting useful data in the interstellar medium well past the heliopause.
[1] https://voyager.jpl.nasa.gov/mission/interstellar-mission/
That isn't meant to throw shade. It's an inspiration of human engineering.