The Eye of Horus — references

Here, a pair of reports providing evidence that the ancient Egyptians knew that Algol is a variable star.

Jetsu, Pordeccu et al. (2013)

Jetsu and Pordeccu (2015)

Here, an earlier report suggesting that the ancient Greeks knew of Algol’s variability. We disagree with most of Wick’s speculation regarding when and why the constellation of Perseus was formed, but we agree that the placement of Algol in the eye of Medusa was not an accident.

Wick (JAAVSO, 1996)