Echte Bilder der Venus: Die sowjetischen Venera-Sonden, 1960er, 70er, 80er Jahre.

I almost passed due to the YouTuber’s terrible choice of title, but his video essay is really good. At the very end he goes into modern image processing, and shows the best close-up images of the surface of Venus – digitally restored and improved images from earlier probes.

I was not previously aware that the successful surface probes used the phase change of a substance that melted at 30°C to keep the electronics cool long enough to get scans of the surface.