> John Hagee appears to have popularized the term in his 2013 book Four Blood Moons: Something is About to Change.

Terraria had "Blood Moon" when it released 2011, so no the book didn't start it. Terraria is much more popular than that book.

Edit: Apparently there is even a movie from 1990 called bloodmoon, just google it next time...

https://en.wikipedia.org/wiki/Bloodmoon_(1990_film)

Goes back to at least 1900: https://books.google.com/ngrams/graph?content=blood+moon&yea...

The Magic: The Gathering card "Blood Moon" was first printed in 1994. It seems quite unlikely that the term was invented some twenty years later.

Terraria came out in 2011, and it had the blood moon event before it hit 1.0.

There are also many 20th century sources on Google Books, but they don't necessarily refer to the lunar eclipse. It meant "full moon" in frontier Texas, but there are also Wiccan books from the 90s that give this name to the October full moon.

The title doesn't match the article, and it's also not true. The term may have become more widespread after the 2013 book mentioned in the article, but it certainly existed prior to it.

Oh common. I was playing my Magic the Gathering card that was a red card and showed a red'ish moon from the The Dark MtG edition in 1994. And that card was called...

Blood Moon!

TFA says: "John Hagee appears to have popularized the term in his 2013 book"

TFA's title isn't "The term 'Blood Moon' wasn't invented until 2013" but simply "The Blood Moon", don't know why it became that on HN.

Also site seems to be a bit /.'ed now.

I never heard that term until recently and to add to it seems, every month there is a term or 2 for a full moon. That annoys me, "blood moon" hides what is really happening and its scientific cause.

I miss the days when the only term was blue moon and that was considered a rare occurrence. I noticed that term is also used much more then in the past.