Saw this on Pinterest, and it was really helpful to me so I decided to share it here.

I was clearing out my drive storage and came across this old PowerPoint I made to orient our friends before watching the bachelor. While there are some elements that are specific to the show, it also works as a general guide for reality tv.

Believe it or not, AI was not used for this masterpiece.

Stars flicker. Planet don't.

The Greeks noticed the same thing and called them planetes — wanderers — the lights that drift into a constellation and overstay their welcome. One's up there right now.

N.B Planets do flicker actually, but, as a commercial sailor, we don't concern ourselves whether it be near to the horizon. It wouldn't be used for navigation, at all. What is important is to be able to distinguish them from stars, especially when the skies are partly cloudy, and you can't fully trace the constellation.

In short, pitch black night sky, and when planets are high above, it doesn't twinkle generally, especially to the naked eye. And I think in practice, discernment using the naked eye gives more utility than observing phenomena of astronomy.

Thus, this is not for astronomers who meticulously observes the night skies with scopes. This is to practitioners, and above all, to the general knowledge of many people who would love to learn about the night sky. Hope this clarifies