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stars vary greatly in the amount of light they produce

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Q: Why don't stars appear to be the same brightness?
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Are the star in big dipper in the same brightness?

No, the stars in the Big Dipper are not all the same brightness. They vary in brightness due to differences in their size, temperature, and distance from Earth. The two stars at the front of the "bowl" are typically the brightest.


Do stars have the same brightness and sizes?

No. Stars vary greatly in size and brightness.


Is it true that two stars that have the same brightness are the same distance from earth?

Not necessarily. Two stars can have the same brightness but be at different distances from Earth. The distance of a star affects how bright it appears to us, so a closer dim star may appear as bright as a farther bright star.


Why some stars appear bigger and brighter than others?

A stars brightness depends on two factors; its distance from us and its actual brightness (absolute magnitude). The actual brightness of a star depends on various factors, such as its mass, its temperature and its age.Consider two stars of the same actual brightness (absolute magnitude) - if one of them is much closer, then is will be brighter than the further one. It will appear brighter, even though it would be the same side by side - it can be said to be apparently brighter (higher apparent magnitude) due to its distance.A:They appear bigger and brighter because they really are bigger and brighter, but even if they are not bigger and brighter it could be because they are closer.


Why do some stars appear bigger and brighter than others?

A stars brightness depends on two factors; its distance from us and its actual brightness (absolute magnitude). The actual brightness of a star depends on various factors, such as its mass, its temperature and its age.Consider two stars of the same actual brightness (absolute magnitude) - if one of them is much closer, then is will be brighter than the further one. It will appear brighter, even though it would be the same side by side - it can be said to be apparently brighter (higher apparent magnitude) due to its distance.A:They appear bigger and brighter because they really are bigger and brighter, but even if they are not bigger and brighter it could be because they are closer.


What compares the brightness of stars as if they were the same distance from earth?

midorz


What is similarities between apparent brightness and absolute brightness?

Both relate to brightness; both are measured in the same units; both are used for astronomical objects such as stars or galaxies.


How does the distance and size of a star impact its brightness?

The distance of a star from Earth affects its apparent brightness, with closer stars appearing brighter. A star's size also impacts its brightness, as larger stars are typically brighter than smaller stars of the same temperature. However, factors such as temperature and age also play a role in determining a star's overall luminosity.


If two stars have the same apparent magnitude are they the same distance from Earth?

No. Brighter distant stars can have the same apparent magnitude as fainter stars that are closer.(Absolute magnitude does not refer to actual brightness, but rather to what the brightness of a star would likely be at an arbitrary distance of 10 parsecs, rather than its actual distance.)


What is the relationship between star brightness star temperature?

The brightness of a star is related to its temperature; hotter stars appear brighter than cooler stars. This is because the amount of light emitted by a star is proportional to its temperature according to Wien's law. Therefore, stars with higher temperatures are generally brighter than stars with lower temperatures.


What makes some stars appear brighter than others the temperature or the size?

It is a mixture of both. A hotter star will generally appear brighter than a cooler star of the same size. Similarly, a large star will appear brighter than a small one of the same temperature. The brightest stars are generally red supergiants, which are comparatively cool stars, but are so large that their size more than makes up for it. A star's apparent brightness from any given vantage point also depends on its distance. The closer a star is to you, the brighter it will appear.


Is it possible for two regular stars to have the same absolute magnitude but differ in apparent magnitude?

One dimmer star can be closer than a brighter star that is far away. Light flux decreases as the square of the distance. A star that is three times as far away will have to shine nine times brighter than the closer star (absolute magnitude) to appear to have the same magnitude (apparent magnitude). Because apparent magnitude is the brightness of a star, as seen from Earth, whereas absolute magnitude is the brightness of a star as seen from the same distance - about 32.6 light years away.