Algol may be the scariest star in the sky, plus other astronomical happenings in October. ... when the dimmer star passes between the brighter star and Earth, which happens every 2.8 days, ...

Among the apparitions and denizens of the Halloween night sky, one that is often completely overlooked, is a moderately bright star situated along the western border of the constellation of Perseus… ...

The two stars whip around each other less than 6 million miles apart (it’s about 93 million miles from the Earth to the sun). The larger star, a Class K giant, is paradoxically the dimmer of the ...

Ancient Egyptians described Algol's eclipses Date: December 17, 2015 Source: University of Helsinki Summary: The Ancient Egyptian papyrus Cairo 86637 calendar is the oldest preserved historical ...

Algol has a long and venerable history. It's the most prominent eclipsing variable star in the sky and the first discovered. The first astronomer who first noticed Algol's fade-downs was Geminiano ...

The star Algol will be winking at you! The wink is pretty sl… Go outside the next clear evening at around 7 to 8 p.m. and look up high in the southeast (assuming you live in mid-northern latitudes).

Algol is a short-period variable star. It is usually magnitude +2.3, but regularly, at intervals of two days, 20 hours and 48 minutes, the star’s brightness wanes to minimum light of +3.5.

This research “Shifting Milestones of Natural Sciences: The Ancient Egyptian Discovery of Algol’s Period Confirmed”, L. Jetsu and S. Porceddu was published on December, 17th, 2015 in PLOS ONE ...