According to a legend, more than two centuries ago, a famous Paris astronomer used to stand on one of the Seine bridges on nights when the variable star Algol was in eclipse, to point out this ...

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Add Yahoo as a preferred source to see more of our stories on Google. While children dress up as ghosts and goblins for halloween and get their bags and orange plastic pumpkins filled with candy, ...

In this artist's view, the larger, cooler star in the Algol pair deeply eclipses the smaller, brighter star every 2.9 days. We can easily see the eclipse as a dramatic change in Algol's brightness.

These photos contrast the star Algol at normal brightness (left) and when it's eclipsed by a close companion star 2.9 days later. Algol is located in the constellation Perseus, which is shaped liked a ...

Don't miss the big stories. Like us on Facebook. It's known as Algol, the Demon Star, and we can see it shining diabolically in our sky each year around Halloween. To find it, go outdoors in the ...

Algol makes up one of the "eyes" of Medusa's head that Perseus carries. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the ...

While children dress up as ghosts and goblins for halloween and get their bags and orange plastic pumpkins filled with candy, there's a ghoul in the night sky above and it's called Algol, the Demon ...