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When a star exhausts its helium fuel, it can no longer sustain nuclear fusion in its core, leading to a series of significant changes. The core contracts under gravity, causing it to heat up, while outer layers may expand, transforming the star into a red giant. Depending on the star's mass, it may eventually undergo further fusion of heavier elements or shed its outer layers to form a planetary nebula, leaving behind a white dwarf. More massive stars may explode as supernovae, leaving behind neutron stars or black holes.
What else can I help you with?
Why does an old main sequence star have more helium than a young main sequence star?
Stars convert hydrogen into helium over time.However, please note that they do so at very different rates; a massive star burns its fuel (hydrogen) much faster than a less massive star - so you can well have a massive star, which is only a few million years old, but which already burnt much of its fuel.
When does the helium flash occur during the evolution of a star?
The helium flash occurs during the evolution of a star when the core of the star reaches a high enough temperature for helium fusion to begin, typically after the star has exhausted its hydrogen fuel in the core.
What happens to a sun like like star after it has used up all its core fuel?
Once a sun-like star has used up almost all of the hydrogen in it's core it will start to burn helium as well. This starts it's Red Giant phase which drastically increases the size of the star to hundreds of it's original size. Once the star has used up all available fuel it will contract down to the size of the Earth. While shedding it's outer layers into a Nebula. The Star is now a White Dwarf and will slowly fade into a Black Dwarf after trillions of years.
What happens to your eye when it is near helium?
When your eye is near helium, it will not be affected in any noticeable way. Helium is a non-toxic, inert gas that is commonly used to fill balloons. It is safe to be in contact with and does not cause any harm to your eyes.
What is the Advantage of the presence of hydrogen in large scale in the sun?
A star, like the sun, spends much of its life producing energy, in the form of light and heat, through the fusion of hydrogen into helium. When the hydrogen is mostly used up the star moves to fusion of helium into larger (heavier) elements. At that stage the sun will become a red giant. It will then be large enough to engulf the earth's orbit, thyough well before that happens, the earth will be a burnt, lifeless "cinder".
Why does an old main sequence star have more helium than a young main sequence star?
Stars convert hydrogen into helium over time.However, please note that they do so at very different rates; a massive star burns its fuel (hydrogen) much faster than a less massive star - so you can well have a massive star, which is only a few million years old, but which already burnt much of its fuel.
Has helium ever been used in blimps?
Yes, helium has been used in blimps as a lifting gas. Helium is less dense than air, which allows it to provide buoyancy and help the blimps stay afloat. However, today, most blimps use a combination of helium for lift and air for control and propulsion.
A star is comprised mostly of what two elements?
H Hydrogen which is the lightest element that is highly flammable element and He Helium the second lightest element with no fire risk. This is why helium is used in making balloons than hydrogen which is much lighter than helium.
When does the helium flash occur during the evolution of a star?
The helium flash occurs during the evolution of a star when the core of the star reaches a high enough temperature for helium fusion to begin, typically after the star has exhausted its hydrogen fuel in the core.
What happens to a star when it has used up all its fuel?
It collapses.
What gases have commonly been used in balloons that carry passengers?
Hydrogen, Helium
Is helium used in car tires?
My new Chevy Equinox came from the dealer with helium filled tires. Since this cost money,what happens on a trip if they leak and I need to add air?
What happens to a sun like like star after it has used up all its core fuel?
Once a sun-like star has used up almost all of the hydrogen in it's core it will start to burn helium as well. This starts it's Red Giant phase which drastically increases the size of the star to hundreds of it's original size. Once the star has used up all available fuel it will contract down to the size of the Earth. While shedding it's outer layers into a Nebula. The Star is now a White Dwarf and will slowly fade into a Black Dwarf after trillions of years.
What happens if you put helium in your tires?
Putting helium in your tires can cause them to lose pressure more quickly than if you used regular air. Helium molecules are smaller and can escape through the rubber more easily, leading to more frequent refills.
What happens to your eye when it is near helium?
When your eye is near helium, it will not be affected in any noticeable way. Helium is a non-toxic, inert gas that is commonly used to fill balloons. It is safe to be in contact with and does not cause any harm to your eyes.
What happens to water after it has been used?
It depends on how it was used.
What are several ways in which helium is used?
mostly helium is used in balloons
