Blue Moon

A "blue moon" happens when a full moon occurs at the end of the month, meaning there was a previous one near the beginning of that same month (the moon takes 29.5 days each orbit but most months are 30 or 31 days).

As you can see from this photo, it has nothing to do with the colour of the moon (it isn't blue) and really isn't any different from any other full moon.

My latest blog post: Think for Yourself: In the end, everything is just an opinion. Be skeptical, and think for yourself! (posted 2026-04-25).

My latest podcast: OJB's Podcast 2026-04-14 How Far is that Star?

If you're not sure what to view from my site, here are some suggestions: My Latest Airshow Report, My Favourite Wines and Beers, An Interesting Astronomical Observation, See Some Photos, Read Some Mac Tips.

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