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The Algol star system is known as an eclipsing binary pair, As such, one star moves in front of the other, blocking it's light. Because the pair are in line with the Earth, it has the effect that one stars seems to disappear.

See related link for an animation of the effect.

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Q: Why does one star seem to disappear in the Algol star system?
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Related questions

What is the name of the star system Algol is in?

Algol is in the constellation Perseus.


What is the algol star?

Algol is a bright three-star system that is part of the constellation Perseus. Other names for Algol are Demon Star, Gorgona, and El Ghoul.


Which star system is an eclipsing binary?

algol


The star Algol is better classified as a what type of star?

Algol (Demon Star) is a bright star in the constellation Perseus.Algol is actually a triple star system - Beta Persei A, B, and CBeta Persei A has a spectral type of B8 and is a blue-white giantBeta Persei B has a spectral type of K0 and is an orange subgiantSee related link for more information.


The star Algol is estimated to have approximately the same luminosity as the star Aldebaran and approximately the same surface temperature as the star Rigel Algol is best classified as a?

Algol is a blue main-sequence star in the constellation Perseus


Which star is largest Sirius or Algol?

Algol Sirius (Dog Star) has a radius of 1.711 Solar masses. Algol (El Ghoul or demon) has a radius of 2.3 Solar masses.


Are there any planets located near the star algol?

At the moment no planets have been detected, which is not surprising as it's a binary star system (possibly triple star).


What is the temperature difference between Aldebaran and Algol?

Algol is a triple star system.Aldebaran: 4,010KAlgol A: 12,000K


Eclipsing binary star in Perseus?

Algol


What does the name of the star called Maria mean and why was it given its name Also write about the star Algol?

I didn't know there was one called Maria but Algol is Arabic for 'The Ghoul'.


How can you explain the Algol paradox?

In some binary systems, the less-massive star has become a giant, while the more-massive star is still on the main sequence. If higher-mass stars evolve faster than lower-mass stars, how do the lower-mass stars in such binaries manage to leave the main sequence first? This is called the Algol paradox, after the binary system Algol.


How many astronomical units is ALGOL from the Earth?

I'm pretty sure Algol is 105 light years away.