It all depends on the luminousity of the star and the relative distance of the observer.
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.
Observed from Earth there are no brighter stars at the night sky. If you see something that is brighter, it will be a planet.
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 Brightest star in the sky is the SUN However, in the night sky, the brightests star is 'Sirius' , the Dog Star. It has with it , a small binary star, known as the 'Pup'. Other objects in the night sky are brighter, viz. the Moon, and some planets, but they are NOT stars.
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.
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.
A star that is brighter than another.
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.
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.
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.
Because it actuall IS brighter.
The star might be closer to the Earth, or it is just brighter than the others. :D
Observed from Earth there are no brighter stars at the night sky. If you see something that is brighter, it will be a planet.
There is no such thing as a star with a magnitude brighter than -1. Negative magnitudes indicate brighter objects, with the most negative magnitudes corresponding to the brightest objects in the sky.
It is four times as brighter. It is four times as brighter.
Take any famous star, and read about it - most of them are bigger than our Sun. That doesn't mean our Suns is exceptionally small, quite the contrary; however, the brighter stars can be seen from far away.Take any famous star, and read about it - most of them are bigger than our Sun. That doesn't mean our Suns is exceptionally small, quite the contrary; however, the brighter stars can be seen from far away.Take any famous star, and read about it - most of them are bigger than our Sun. That doesn't mean our Suns is exceptionally small, quite the contrary; however, the brighter stars can be seen from far away.Take any famous star, and read about it - most of them are bigger than our Sun. That doesn't mean our Suns is exceptionally small, quite the contrary; however, the brighter stars can be seen from far away.
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.