I have stumbled upon a website that is quite mundane with little to no risk of actual excitement or heightened heart rates:
The website tracks aircraft with mode-s transponders as they traverse the skies.
R. S. Dalton
This is great. It’s fascinating to watch. It’s a fine form of Safe Excitement. We can sit comfortably at home and watch — and be grateful that we are not risking out lives up there.
Sincerely (dull men are always sincere, mostly),