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A star's brightness is a function of its luminosity, or the amount of energy it produces per unit time. Vega must have a higher luminosity, meaning it fuses more material than Betelgeuse in a given period of time.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoIt isn't brighter. According to Wikipedia, Vega has an apparent magnitude of 0.03, and Arcturus, -0.04. This makes Arcturus a little brighter.
In general, if one star looks brighter than another, the reasons may be that (a) it is closer to Earth, or (b) that its absolute (real) brightness is greater. Or some combination of the two.
It isn't brighter. According to Wikipedia, Vega has an apparent magnitude of 0.03, and Arcturus, -0.04. This makes Arcturus a little brighter.
In general, if one star looks brighter than another, the reasons may be that (a) it is closer to Earth, or (b) that its absolute (real) brightness is greater. Or some combination of the two.
It isn't brighter. According to Wikipedia, Vega has an apparent magnitude of 0.03, and Arcturus, -0.04. This makes Arcturus a little brighter.
In general, if one star looks brighter than another, the reasons may be that (a) it is closer to Earth, or (b) that its absolute (real) brightness is greater. Or some combination of the two.
It isn't brighter. According to Wikipedia, Vega has an apparent magnitude of 0.03, and Arcturus, -0.04. This makes Arcturus a little brighter.
In general, if one star looks brighter than another, the reasons may be that (a) it is closer to Earth, or (b) that its absolute (real) brightness is greater. Or some combination of the two.
Wiki User
∙ 14y agoIt isn't brighter. According to Wikipedia, Vega has an apparent magnitude of 0.03, and Arcturus, -0.04. This makes Arcturus a little brighter.
In general, if one star looks brighter than another, the reasons may be that (a) it is closer to Earth, or (b) that its absolute (real) brightness is greater. Or some combination of the two.
Wiki User
∙ 11y agobecuase it just is
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Why is Jupiter in the night sky brighter than betelgeuse?
Jupiter is brighter than Betelgeuse in the night sky because it is much closer to the Earth in comparison to Betelgeuse(Betelgeuse is more than 500 lightyears away form the Earth). This way, Jupiter appears larger than Betelgeuse, and celestial objects that appear larger also appear brighter than objects that appear small.
Why vega brighter than arthuros?
It is not. Arcturus is brighter.It is not. Arcturus is brighter.It is not. Arcturus is brighter.It is not. Arcturus is brighter.
Why Vega brighter than Arcturus?
The apparent brightness of stars depends on:* The distance * The actual brightness * In some cases, the brightness may be dimmed by clouds of dust and gas, between us and the distant star. In the case of Vega and Arcturus, Vega is NOT brighter than Arcturus. Their apparent magnitude (brightness) is about the same, with Arcturus perhaps being slightly brighter, depending on the source consulted. In terms of real brightness ("absolute magnitude"), Arcturus is actually brighter. When consulting numbers, please remember that smaller numbers refer to brighter objects.
Why Vega is brighter than Arcturus?
1. It might be closer to us, 2. it might be a bigger and brighter star. Arcturus is 35 light years away and has an absolute magnitude of -0.3, which makes it 100 times brighter than the Sun, while Vega is 26 light years away and has an absolute magnitude of 0.5, about half as bright as Arcturus. From Earth they are both about the same brightness.
Why do cool stars have greater luminosity than our sun?
They do not necessarily have greater luminosity, it depends on their size. Betelgeuse is cooler and brighter; a red dwarf is cooler and less bright.
Which star is brighter Vega or Betelgeuse?
Brightnest is a factor of luminousity and distance as seen from Earth. (Apparent magnitude)Vega - 0.03.Betelgeuse: 0.42So Betelgeuse is brighter as viewed from Earth.
Which star is brighter Betelgeuse or Rigel?
Rigel is brighter than Betelgeuse.
Is Vega or Betelgeuse the brightest star?
Brightness is a function of a stars luminosity as observed from Earth. So our Sun is the brightest. Vega has an apparent magnitude of: 0.03 Betelgeuse has an apparent magnitude of 0.42 So, in apparent magnitude, Vega is brighter.
Why is the vega brighter than arcturus?
Arcturus is a bit brighter than Vega, actually.
Which star is brighter Aldebaran or Betelgeuse?
Betelgeuse is brighter.
Which is the brighter star aldeberan or Betelgeuse?
Betelgeuse is more luminous than Aldebaran.
Which is brighter Aldebaran or Betelgeuse?
This could be considered a trick question. Generally, Betelgeuse is brighter BUT Betelgeuse is what we call a variable star and there are times when it is fainter than Aldebaran.
Why is Jupiter in the night sky brighter than betelgeuse?
Jupiter is brighter than Betelgeuse in the night sky because it is much closer to the Earth in comparison to Betelgeuse(Betelgeuse is more than 500 lightyears away form the Earth). This way, Jupiter appears larger than Betelgeuse, and celestial objects that appear larger also appear brighter than objects that appear small.
Is Betelgeuse warmer than the sun?
No. While Betelgeuse is larger and brighter than the sun, it actually has a lower surface temperature.
What is hotter than the sun Vega or Betelgeuse?
Vega = 9,602 KelvinThe Sun = 5,778 KelvinBetelgeuse = 3,500 Kelvin
Which is brighter Rigel or Betelgeuse?
Rigel is brighter.
Why vega brighter than arthuros?
It is not. Arcturus is brighter.It is not. Arcturus is brighter.It is not. Arcturus is brighter.It is not. Arcturus is brighter.
