> During a routine, planned roll maneuver on Feb. 27

It's amazing not only are the electrical components still operational, but some mechanical ones as well.

It uses a tape drive to record observations and radio them back to earth. I find it amazing to imagine a single reel of tape (and the belts in the drive) still being reliable 48 years later...

There's quite a lot of machinery from that era (and older) still functioning today, so it's not that surprising to see the same of this probe that was specifically designed for space travel.