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Because of its ENORMOUS size. We believe that Betelgeuse is about as large as a the orbits of the Asteroid Belt, so if Betelgeuse were here in our own solar system, it would consume Mercury, Venus, Earth and Mars, and probably destroy Jupiter as well.

As stars go, the 800 light-year distance to Betelgeuse is not that far away, although we wouldn't want it to be any closer. When Betelgeuse becomes a supernova, it will likely outshine the Moon.

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15y ago
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15y ago

The answer can only be that you do not live within the tropics (the Tropic of Capricorn and the Tropic of Cancer), or if you do, you are puzzled because the sun is not always at your zenith. If there were no tilt at all to the earth's axis, then the sun would reach the zenith every day, at every point of the equator. The earth's equatorial plane and the ecliptic would be coplanar. The equator would be the only place where the sun exactly reaches zenith. Since there is a tilt of very close to 23.5 degrees, the sun exactly reaches zenith at the equator two times per year, and it will reach zenith at the tropics once each during a year.

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14y ago

Due to it's enormous energy output, the distance doesn't make a lot of difference.

Compare a candle three feet in front of you, versus an atomic bomb going off three miles away. The second will be much brighter than the first.

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13y ago

It's not. The distance between the sun and the earth is constant and does not stay the same. If the distance between the two bodies changed significantly, the earth would either burn up when it got closer to the sun, or freeze when it went farther away from the sun.

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14y ago

Because the sun light has nothing to reflect off of. The only way to see sun shine is when it is reflected off something.

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14y ago

Such stars often have a very large surface area. This will more than compensate for the reduced power output per square meter.

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15y ago

Because your an idiot!

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14y ago

Because It's a star.

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Q: Why does a cool distant star such as betelgeuse have such a high brightness?
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Why does a cool distant supergiant star such as Betelgeuse have such a high apparent magnitude?

Because it's huge ! It's a supergiant! Hence the word SUPER!


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The red giants like Betelgeuse and Antares are bright and - relatively - cool.


What type of stars has low temperature but high luminosity?

The red giants like Betelgeuse and Antares are bright and - relatively - cool.


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Yes, it will. The higher the brightness. the less the battery life will be.


Why might a Proxima Centauri look dimmer than a Betelgeuse?

Proxima Centauri has an insignificant luminosity to Betelgeuse. Although it is the closest known star(4.2 light-years) to our Sun, it is virtually impossible to see because it is so dim. Betelgeuse, on the other hand, is a lot farther (640 light-years). Yet, it is one of the brightest stars in our night sky. This is because Betelgeuse has an extremely high luminosity.


What are facts about Betelgeuse?

Betelgeuse is the eighth brightest star in the night sky and the second brightest star in the constellation of Orin. It is classified as a Red Giant. Astronomers believe that Betelgeuse is only 10 million years old, but has evolved rapidly due to its high mass. Betelgeuse is made from: Helium, Carbon, and Oxygen. Astronomers don't know when but they are sure that Betelgeuse will explode and become a SuperNova. Betelgeuse is 700 million miles in diameter and the surface temperature is 6,000 degrees Fahrenheit. Its luminosity is about 10,000 times the Sun and it's the first star to be directly imaged by a telescope. Finally Betelgeuse is visible in winter skies from the Northern Hemisphere in the constellation Orion. Hope that Helped You :)


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Betelgeuse ("beetlejuice") is believed to be only a few million years old (~ 8.5 million) due to it's high mass. It is also believed, that it may become a supernova within a time frame where it could be observed by human civilization.


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