The brightness of a star depends on the star's temperature, size, and distance from Earth.
Distance on which you can see the stars.
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.
If the bright star is located farther away from Earth than the less bright star, it will appear dimmer due to the inverse square law of light intensity. The amount of light reaching Earth decreases with distance, so a closer, less bright star can appear brighter than a further, brighter star.
One reason could be that the brighter star is larger and hotter, emitting more light. Another reason could be that the brighter star is located closer to Earth, making it appear brighter in the sky.
Sirius appears brighter than Pollux because it is closer to Earth and is a more luminous star. Sirius is also a hot, blue star compared to Pollux, which is a cooler, orange giant star, further contributing to the difference in brightness.
The sun appears brighter than other stars because it is much closer to us than any other star. The intensity of light we receive from a star decreases with distance, so stars farther away appear dimmer. Additionally, the sun is a relatively hot and luminous star compared to many others, further contributing to its brightness.
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.
It doesn't. A lot of stars seem larger and brighter than it. In fact, Polaris is the 49th-brightest star in the sky. To us, it is not a particularly bright star. It is important because it seems to be still as other stars rotate around it.
The size of the star, because the smaller the star the hotter it is because of nuclear fusion. So the hotter the brighter.
The Sun is the closest star to Earth, so it appears much brighter than other, more distant stars.The Sun is eight light-MINUTES away from the Earth. The NEAREST other star is 250,000 times further away.
The Sun is much, much closer to the Earth than any other star - eight light minutes vs. four light years for the next nearest star.
If the bright star is located farther away from Earth than the less bright star, it will appear dimmer due to the inverse square law of light intensity. The amount of light reaching Earth decreases with distance, so a closer, less bright star can appear brighter than a further, brighter star.
A star that is brighter than another.
Three possibilities: It is brighter (some are brighter than others), it is bigger, or it is closer to earth.
One reason could be that the brighter star is larger and hotter, emitting more light. Another reason could be that the brighter star is located closer to Earth, making it appear brighter in the sky.
Our Sun appears brighter than Alpha Centauri B because of its proximity to our point of view. We are much closer to our Sun then any other star which means that our Sun will be much brighter then everything else in the sky.
Sirius appears brighter than Pollux because it is closer to Earth and is a more luminous star. Sirius is also a hot, blue star compared to Pollux, which is a cooler, orange giant star, further contributing to the difference in brightness.
The Sun is the closest star to Earth, so it appears much brighter than other, more distant stars. The Sun is eight light-MINUTES away from the Earth. The NEAREST other star is 4.2 light years away (Proxima Centauri).