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Explain how a red star can be more luminous than a bluish-white star?
Wiki User
∙ 14y ago
By being far larger - a red giant/supergiant.
Wiki User
∙ 14y ago
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What category of star is hot but not very luminous?
Main sequence
Is the sun a star or a plant?
The sun is a star. A star is a luminous sphere of plasma held together by its own gravity. A planet orbits a star, such as the Earth which orbits the Sun.
The actual brightness of the star is what?
a star is made up of burning gases which makes it a luminous body. the sun is the only star in the solar system. the brightest star except the sun is sirius
What is the brightest star in the universe?
As the question specifies brightness, the brightest star in the Universe is our Sun - because it is the closest star to us. The most luminous star is another question: See related question.
Explain that your sun is not the star in your solar system?
That would be difficult to explain. -- The Sun IS a star. -- It IS in my solar system. -- It's the ONLY star in my solar system. -- So the sun is THE star in my solar system.
How can a cool star be more luminous than a hot star?
Luminosity is related to temperature and distance.A cool and thus less luminous star would be brighter than a more luminous star at a greater distance.Our Sun is a relatively cool star in comparison to say Rigel, but because it is closer it appears more luminous and brighter.
Why does the expansion of a star's envelope make it cooler and more luminous?
The star's expansion is caused by an increase in energy. Therefore, the star becomes more luminous and cooler due to production of more energy.
Would the sun be more luminous if it were hotter?
Yes luminous actually for a star to get hotter.
Is the star Rigel luminous?
Very!! It is about 66,000 times more luminous than our Sun
What color are very heavy stars?
Generally, the more massive a star is, the more luminous they are. The most luminous stars appear blue.
Is zeta eridani the brightest star?
No, NGC-5882 is more luminous
Which star is more luminous R136a1 or VY Canis Majoris?
R136a1 is the most luminous at about 8,700,000 times more than the Sun. VY Canis Majoris is only 450,000 times more luminous than our Sun.
How diameter and absolute magnitude related?
the larger the mass of the star, the more luminous it is.
How are mass and magnitude related?
Generally the larger the mass of the star, the more luminous it is.
Which is the brighter star aldeberan or Betelgeuse?
Betelgeuse is more luminous than Aldebaran.
The star have light?
because the star is luminous.
Why does an expanding giant star become more luminous?
Less energy is produced in the interior
