Dr. Lauri Jetsu from the University of Helsinki has analysed observations of Algol. He argues that Algol has many companion stars which have not been detected from earlier observations. The results ...

Lauri Jetsu, an astrophysicist at the University of Helsinki, is following a tradition that may stretch back thousands of years. Subscribe to read this story ad-free Get unlimited access to ad-free ...

Add Yahoo as a preferred source to see more of our stories on Google. A bright blue star in the night sky. According to a legend, more than two centuries ago, a famous Paris astronomer used to stand ...

Add Yahoo as a preferred source to see more of our stories on Google. Lauri Jetsu, an astrophysicist at the University of Helsinki, is following a tradition that may stretch back thousands of years.

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 ...

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 second ...

Astronomers have analyzed observations of Algol. They argue that Algol has many companion stars which have not been detected from earlier observations. Algol is an eclipsing binary, where the two ...

Figure: (a) Algol’s O-C data (red circles). The time-axis units are days between November 1782 and October 2018. The green continuous line shows the five signal model for the first 226 years of data ...