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. For more than a decade, he’s studied the bright star Algol, one of the ...

Algol in the constellation Perseus is one of the sky's most remarkable stars. It knows how to wink. Which is another way of saying that its light is variable, and the changes are easily visible with ...

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 ...

Here’s a little astronomical riddle for you: Which star in the late-autumn sky winks at us once every 2 days, 20 hours, and 49 minutes? Each wink lasts about 10 hours. If you identified the mystery ...

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. Algol is an ...

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 ...