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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.

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โˆ™ 2010-02-03 23:11:33
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Q: Why is Vega brighter than Betelgeuse?
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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.

Why is the vega brighter than arcturus?

Arcturus is a bit brighter than Vega, actually.

Is betelgeuse brighter than the sun?

yes! its brighter than our sun

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.

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.

Which is brighter the Sun or Vega?

Brightness is a function of a stars luminousity as seen from Earth. The Sun is far brighter than Vega. However, if they were both viewed from the same distance, then Vega would be brighter.

Which is brighter Rigel or Betelgeuse?

Rigel is brighter.

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