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It all depends on the luminousity of the star and the relative distance of the observer.
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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.
Which star is brighter Betelgeuse or Rigel?
Rigel is brighter than Betelgeuse.
Why does star Sirius appear brighter than star pollux?
While Pollux is actually brighter than Sirius, Sirius appears brighter because it is several times closer.
Why do you see Sirius as the brightest star in the sky?
Sirius is visible because it is a large, bright star, and is closer to Earth than other (actually brighter) stars.
What star is brighter than Sirius?
Observed from Earth there are no brighter stars at the night sky. If you see something that is brighter, it will be a planet.
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.
What is a brighter star?
A star that is brighter than another.
Which magnitude would be associated with the brighter star?
The greater a star's magnitude, the brighter it appears in the sky. Magnitude is a scale of apparent brightness as seen from Earth and says nothing about how large a star actually is or how much energy it is radiating. A small star that is closer may have a greater magnitude, as seen from Earth, than a large, active star that is much further away.
How can a small star could look brighter from earth than a bigger star?
It would look brighter if it is closer to Earth. It is also possible for a small star (small in diameter) to have a higher surface temperature, i.e., to emit more light per square meter of its surface.
Star A is a first magnitude star. Star B is a sixth magnitude star. Which star is brighter and by how much?
A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.
Why does Sirius star look brighter than alpha centauri star?
Because it actuall IS brighter.
How can you tell if a star is brighter than another?
The star might be closer to the Earth, or it is just brighter than the others. :D
Which star is brighter Betelgeuse or Rigel?
Rigel is brighter than Betelgeuse.
Why does star Sirius appear brighter than star pollux?
While Pollux is actually brighter than Sirius, Sirius appears brighter because it is several times closer.
Why do you see Sirius as the brightest star in the sky?
Sirius is visible because it is a large, bright star, and is closer to Earth than other (actually brighter) stars.
What is the original brightness of a star when it suddenly flares up to many times?
A star the size of our Sun or smaller is too small to become a "Nova", so we can expect that the original brightness of a "nova" star is probably brighter than the Sun; possibly a lot brighter.
How many times brigther will a star be than an identical star that twice as faraway?
It is four times as brighter. It is four times as brighter.
