Algol (Beta Persei), the second brightest star in the constellation Perseus, exhibits regular variations in brightness observable without a telescope. This variability is due to a binary star system ...

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 ...

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 ...

Stars are the fundamental building blocks of our universe. Most stars host planets, like our Sun hosts our solar system, and if you look more broadly, groups of stars make up huge structures such as ...

For the first time, astronomers have spotted a rapidly spinning neutron star that is gravitationally bound to a helium star companion. The discovery of this unusual binary system helps confirm a long ...

The SOAR Telescope, located on Cerro Pachón in Chile, has received a major upgrade with the installation of the SOAR ...

Astronomers suspect there is at least one other star interacting with the material cast off by the central dying star in NGC 6072, creating the abnormal appearance of this planetary nebula. Credit: ...

"We show how planets in binary systems can undergo a mirrored migration process, so that both stars end up with hot Jupiters." Astronomers may have uncovered the curious origins of the universe's most ...

Stars are the fundamental building blocks of our universe. Most stars host planets, like our sun hosts our solar system, and if you look more broadly, groups of stars make up huge structures such as ...