In the constellation Perseus the Hero, the star Algol is fun to watch due to its regular changes in brightness. And you don't even need a telescope. Officially designated Beta Persei, it's the ...

The "Demon Star" of Algol gets eclipsed this week by one of its stellar siblings. Here's what you need to know.

Dimming demon star. The scientists also detected another pattern in the calendar, one that occurred every 2.85 days. Now the researchers suggest this approximately matches regular dimming of Algol ...

Jetsu’s latest study, published last month in the Astrophysical Journal, suggests the so-called “Demon Star” could be orbited by up to five more stars, most of them too dim to see. “It was ...

Algol - also known as the Demon Star decreases in brightness for a few hours every 2.87 days. Modern astronomers noted this in 1783 - but the Egyptians got there first.