Is it just coincidence that from our point of view the moon looks like it's the exact same size as the sun? Or is there something else going on?
I remember learning this fact in an astronomy class and that we’re not aware of this happening anywhere else in our solar system.
Here's a nice pic of Phobos and Deimos as seen from the mast-camera of Curiosity, compared with Luna.
I remember reading an Asimov piece many years ago where he was (typically) spinning out a kind of what-if about how the large size of the moon, and the consequent majorly-obvious eclipses, influenced the importance of ancient astronomy. Not to mention other effects like tides and moonlight.
And here's the backstory about verifying relativity: https://en.wikipedia.org/wiki/Solar_eclipse_of_May_29,_1919
I think part of the perception that a total eclipse "perfectly" blocks the sun is that the corona has a fuzzy edge but the surface does not, so when the moon is actually larger than the sun in the sky you still see the same eerie coronal glow. In particular there's little perceptible difference between blocking 100% of the sun and blocking 105% of the sun, compared to 100% versus 95%.