Now it looks like we may get to see one in real life, as it's been predicted that the stunning natural phenomena will occur in 2019.
In CAOS, we see Sabrina's Aunt Zelda tell her that a blood moon will be visible on her 16th birthday, which coincides with Halloween.
As this only happens every 66 years, she's required to give up her mortal life and sign herself over to the Dark Lord in a "dark baptism".
In reality, blood moons – orange-hued eclipses that occur when direct sunlight is blocked by the earth's shadow – arise a little more often than that.
According to Inverse, Columbia University astronomer Jana Grcevitch predicts that we may see one as soon as January 21.
So, what could this mean for us?
Blood moons have long been considered "unlucky" by superstitious souls – and it could spell bad news for your relationship.
Astrologer Amanda Shree believes that "eclipses are often tipping-points that shift situations, expedite change, and sometimes even pull the rug out from underfoot."
Fellow astrologer Jamie Partridge adds: "The lunar eclipse focuses your attention on your emotions, intimate relationships, and your home and family."
Hmm. We think we may stay in that night.
Meanwhile, Friends could be leaving Netflix soon – and devastated fans say they'll CANCEL their subscriptions in protest.
Chilling Adventures Of Sabrina creator has revealed a secret Riverdale link… but did you spot it?
And if you want to get a witchy look, Argos is selling Harry Potter jewellery including a £9.99 Snitch necklace and £13 Dobby earrings.
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