Great post. I love this subject, and it sparked a few thoughts.

I’ve heard concerns expressed that Humans on Mars might find the slightly longer day tough to deal with. If the “dominant human circadian rhythm has a 25-hour cycle” maybe not so much?

from Neil F. Comins
“Studies have shown that biological clocks in most creatures do not cycle in exactly 24 hours. For example, the dominant human circadian rhythm has a 25-hour cycle. Fortunately, sunrise resets, or entrains, clocks that are not precisely 24 hours long. But entraining can only occur if a biological clock is within three hours of the day-night cycle.”

From the hunt for Extra-Solar planets, we’re learning that our particular solar system model may be very rare indeed. When and if others similar to our own are found, and when one of those is found to possess an Earth-like planet, it would seem the odds are very high against it having a satellite like our Moon.
So, most of the Earth-like worlds would be like Solon, and most of the sentient life might follow that mode of evolution?

I wonder how the development of our interest and understanding of Astronomy would have been impacted.
Remember ‘Moon Watcher’ from Arthur C. Clarke’s novel 2001?
I could see the absence of a big, obviously spheroid, Moon slowing the creation and development of a bunch of faculties in an evolving sentient race.

Very cool Raoul.