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Apparent and absolute magnitude

The stars and constellations are always in the same place. Many people think that is true. That’s not true. Millions of years behind us, they have brought great changes. Looking at the period of one human life many do not know some facts related to the starry sky. Stars have their own brightness. The stars have their brightness. Apparent and absolute magnitude are the units of measurement by which we measure the brightness and visibility of a star. However, there are stars that change their brightness over hours, days or years, and are not caused by atmospheric phenomena. Epsilon aurigae is one such star.

Epsilon Aurigae

Following deep space, sometimes such large changes in brightness occur that there are stars that “disappear” and reappear in the sky during that period. The change in brightness and the stars that “disappear” are the reason why the starry sky is not always the same if followed over an extended period. Many variable stars change their brightness over days or months, but there are also stars that change their brightness over very large periods. One such star is Epsilon Aurigae, which enters the eclipse phase every 27 years. This eclipse lasts for a full two years. For half a year the light disappears, after that Epsilon Aurigae is in the eclipse phase for a year, and after that it intensifies the glow again.

Medium bright star

Even today, astronomers have no definite proof of what is happening during the one-year Epsilon Aurigae eclipse. During this period, the star is not obscured by any solid object. At that distance, it would have to be an incredibly large object bordering on – impossible. The latter theory is related to an irregular and huge dense cloud of particles surrounding the star. Epsilon Aurigae is the closest medium-bright star to the Capella star and you can see it with the naked eye. Fortunately, it is 2132 light-years from Earth. Epsilon Aurigae is 60,000 times brighter than the Sun, and if it were closer to Earth (like Cappel) – Epsilon Aurigae would have -6 apparent magnitude. That would be so great that Epsilon Aurigae would see the star during the day as well.

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