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Depends on its mass, really. But in general, since they use their fuel much slower than our Sun for example, a red dwarf may continue shining for a trillion years, or even for several trillion years - much, much longer than the current age of the Universe.

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βˆ™ 14y ago
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βˆ™ 6mo ago

There are millions of red giants in our galaxy alone. Red giants are older stars that have exhausted their core hydrogen fuel and expanded in size, making them relatively common in the later stages of stellar evolution.

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βˆ™ 14y ago

I can't tell if your reffering to the smaller star, the blue giant or if your talking about the blue supergiant. I will explain the latter. They have 10-50 solar masses. The biggest known blue supergiant is 50 times larger then the sun, in terms of size.

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βˆ™ 14y ago

The largest can have several hundred times the diameter of the Sun.

The largest can have several hundred times the diameter of the Sun.

The largest can have several hundred times the diameter of the Sun.

The largest can have several hundred times the diameter of the Sun.

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βˆ™ 13y ago

Only a very small fraction of stars are red giants at any given moment. But they do stand out, because they are extremely bright.

Only a very small fraction of stars are red giants at any given moment. But they do stand out, because they are extremely bright.

Only a very small fraction of stars are red giants at any given moment. But they do stand out, because they are extremely bright.

Only a very small fraction of stars are red giants at any given moment. But they do stand out, because they are extremely bright.

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βˆ™ 15y ago

The theoretical maximum mass that a star can have is about 150 times the mass of our Sun. Anything larger, and the fierceness of the solar radiation would push the excess mass away.

A star that's 150 times the mass of our Sun will be about a thousand times larger in diameter. If such as star were placed in the center of our solar system, it would swallow up Mercury, Venus, the Earth, Mars and the asteroid belt.

Very massive stars burn hotter and brighter, are much larger and consume their hydrogen fuel far more quickly that the Sun does. Our Sun is about 4.5 billion years old, and we expect it to continue to shine much as it does now for another 4 billion years or so. A super-massive star will form, shine very brightly for a few million years or less, and die spectacularly in a supernova explosion that will leave behind a "black hole in space", a place where gravity is so strong that not even light can escape from it.

Betelgeuse is a very massive supergiant star, about 10 million years old. It is already approaching the end of its life, and will probably go supernova within the span of humanity.

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βˆ™ 14y ago

Typical red giants are red giants for about a couple of million years.

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βˆ™ 14y ago

The largest can have several hundred times the diameter of the Sun.

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βˆ™ 13y ago

Only a very small fraction of stars are red giants at any given moment. But they do stand out, because they are extremely bright.

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βˆ™ 14y ago

Giant stars come in all the normal star colors, though yellow giants are rare compared to blue or red.

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Related questions

Which are hotter white dwarfs or red giants?

red giants


Are there different types of red giants?

Yes, there are. The classic red giants that come from sun- like stars, and red supergiants come from blue giants.


Are red giants or blue giants bigger?

Generally red giants are bigger, but really it has more to do with how hot they burn. Blue giants burn hotter and have more mass.


How big are Red Giants?

Red Giants are 20 to 100 times bigger than the Sun.


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No, red giant stars are not the largest stars in the universe. There are stars known as supergiant and hypergiant stars that are even larger than red giants. These stars can be hundreds to thousands of times larger than our Sun.


Where are white dwarfs supeegiants and red giants?

White Dwarfs, Supergiants, and Red Giants are stars that are found in the sky.


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