Oldie, but a goodie. Come spend a couple minutes with Carl Sagan as he explains how Eratosthenes figured out the circumference of the earth and that it truly was a sphere!
The pacing is a little slower than we're used to these days, but it's a relaxing five or so minutes. Rebel against the attention economy for a moment this Friday and indulge yourself.
The only reason find it hard to stay awake is because I spent nearly a decade watching these as I fell asleep.
Carl's calm, soothing voice always gets me and he made me the curious person I am today.
People with nice voices talking about space is so :comfy: