Algol: Demon Star in the Constellation of Perseus

Algol, also nicknamed the Demon Star, is the second brightest star in the constellation of Perseus. Algol is an excellent example of a variable star since its brightness can change throughout the night. Perseus is an ancient constellation that can be seen during the autumn season in the northern hemisphere. It can be a fairly easy constellation to point out if you know where to look. Perseus has a collection of bright stars and unique star clusters. The two brightest stars, Mirfak and Algol, stand out in the night sky. In this video, we will explore the star called Algol, often nicknamed the Demon Star.
Also is a triple star system. β Persei Aa1 and β Persei Aa2 regularly pass in front of each-other causing eclipses. This system is classified as eclipsing binary stars. In many cultures, Algol is connected with stories of demons, spirits, or monsters. In Greek Mythology, Algol is often represented as the head of Medusa. In Hebrew folklore, Algol was called Rōsh ha Sāṭān, or "Satan's Head". The name Algol is derived from the Arabic term ra’s al-ghul, which means 'head of the ogre'.
Special thanks to David Cocklin for his picture of the Alpha Persei Star Cluster. Visit him on Twitter to see more of his astrophotography. / david_a_cocklin
Visit stars.chromeexperiments.com/ to use and explore this star simulation.
Chapters
0:00 - Introduction to Algol
0:22 - Subscribe to Learn the Sky
0:32 - Overview of Perseus
1:11 - Star Map of Perseus
1:48 - Mirfak, the alpha star of Perseus
2:53 - Algol, the beta star of Perseus
4:20 - Algol Simulation from 100,000 Stars
5:47 - How to Find the Perseus constellation
7:23 - Historical aspects of Algol
8:08 - Review of Algol and Perseus
Links and Resources mentioned in this video
▶ Cassiopeia Constellation: bit.ly/LearntheSky-CassiopeiaC...
▶ Perseus Constellation: bit.ly/LearntheSky-PerseusCons...
▶ Find Andromeda Galaxy: bit.ly/LearntheSky-AndromedaGa...
Playlists
▶ Stargazing Basics: bit.ly/LearntheSky-StargazingB...
▶ Zodiacal Constellations: bit.ly/LearntheSky-ZodiacalCon...
▶ Circumpolar Constellations: bit.ly/LearntheSky-Circumpolar
▶ Winter Constellations: bit.ly/LearntheSky-WinterConst...
▶ Spring Constellations: bit.ly/LearntheSky-SpringConst...
▶ Summer Constellations: bit.ly/LearntheSky-SummerConst...
▶ Autumn Constellations: bit.ly/LearntheSky-AutumnConst...
▶ Stars: bit.ly/LearntheSky-Stars
▶ Planets: bit.ly/LearntheSky-Planets
▶ Celestial Objects: bit.ly/LearntheSky-CelestialOb...
▶ Versus Videos: bit.ly/LearntheSky-VersusVideos
▶ Celestial Events: bit.ly/LearntheSky-CelestialEv...
▶ Citizen Science: bit.ly/LearntheSky-CitizenScience
Photo Attributions
▶The Double Cluster: ByLukáš Kalista - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index...
▶Constellation Photos: Akira Fujii - The Constellations www.davidmalin.com/fujii/gener...
▶Perseus Celestial Objects Map: By Roberto Mura - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index...
▶Perseus and Taurus in Vermont: By chensiyuan - chensiyuan, CC BY-SA 4.0, commons.wikimedia.org/w/index...
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#learnthesky #stargazing #constellations #stars #keeplookingup

[@learnthesky]

Thanks for watching! New to stargazing? Download my FREE Stargazing Starter Guide: www.learnthesky.com/stargazing_starter_guide

[@lianawei8711]

I didn't know that Algol has actually 3 stars! I discovered something new again. Thank you!

[@fluffythecat8526]

I love the music in the background. It’s so soothing 😌

[@ronianhamol-awon4935]

I love your videos!! Im just grade 7 but im really interested about space so your videos help me learn about it!

[@Navy_realawesomness]

I just Love constellations

[@asdf9C]

This is the star I was born under as some people say.

[@artificial_sweetener]

Thanks so much for this ❤️

[@martymorissette]

Great video again! I didn’t know the name of that star... but for some reason it always poped out to my eyes and Algol is always the star that I see first when trying to map out perscuous

[@joesouless8982]

so inspiring!!!!

[@user-wn1pw9vz1g]

Ogre or algol is an Arabic name, and it is a mythical animal

[@Ricca_Day]

Forgive me. I couldn't help but think of Patrick from Sponge Bob looking at the schematic of Perseus.. 🤷‍♀️O! How the mighty have fallen.. smh🤦‍♀️

[@ameliadiaz8040]

So, Mirfak is Arabic for "elbow" and Algol "devil's head"?

[@medmax9823]

head medosa

[@nexus1g]

Are there any images of the system showing the 3 stars? I can't seem to find any.

[@learnthesky]

I have not come across any yet.

[@AllieThePrettyGator]

The outline of the constellation of Perseus that ive seen looks like a Tree Branch

[@asheru9254]

🌹🌹🌹

[@Navy_realawesomness]

I used Cassiopeia to found Perseus

[@davidtherrien8681]

Choukran jazilan Lil arabiya louRA, astronomes Arabes pour leurs noms des étoiles, Rijel El jabbar, Aldebaran, El NILAM, MINTAQA, BAYT EL JAWAZ DENEB ?

[@glorycommunity6465]

The Demon Star,

[@zakazany1945]

Don't look at it, otherwise you will become stone!