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Most stars use hydrogen as their fuel, fusing the hydrogen nuclei into helium and radiating the energy that this releases. The helium acts as a sort of "nuclear ashes" in the solar fireplace.
When a star grows old, the amount of helium "ash" in the core of the star begins to interfere with the hydrogen fusion, and the star begins to collapse. The collapsing star generates heat through the increasing pressure and density of the core, and at some point, the helium in the core gets so hot and so dense that the helium itself begins to fuse into carbon and oxygen. At that point, the star expands into a red giant.
Very much like the Sun itself will, in about 4 billion years.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoRed giants they go through a proccess were they burn all the hydrogen and it turns into helium. Then it turns into i think nickel(not sure)and the proccess keeps repeating itself until it gets 2 iron in which no more energy can be extracted.
Guess my age?lol
Wiki User
∙ 13y agothe North star
Any star that is in its red giant phase, as the fusion of helium creates so much energy that the star expands. Betelgeuse in the constellation Orion (bright star located on Orion's right "shoulder") is an excellent example.
Wiki User
∙ 13y agoAll stars that have left the main sequence. Typically red giants, but not always.
Wiki User
∙ 11y agored giant
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When a star has no fuel left and its outer layers escape into space what is its remaining core called?
When the layers escape into space, this is classified as a planetary nebula. What usually is left behind is a white dwarf.
Which is the element that the sun burns as fuel?
Hydrogen to Helium.
Why sun have hydrogen and helium?
Hydrogen is the fuel used by the sun, helium is the waste produced by hydrogen use in the fusion process
What is the fuel that feeds stars?
Hydrogen is the main source and Helium second.
What is the main fuel in stars if any?
In our solar system both the gas giants Jupiter and Saturn, and the ice giants Uranus and Neptune (sometimes also called gas giants) are believed to have rocky cores, likely composed of silicates, ice, and possibly heavier elements like metals such as nickel/iron although their true composition is not well known. Above that are deep layers of metallic hydrogen. Their atmospheres are predominatly molecular hydrogen and some helium, with other compounds such as ammonia present in small amounts on Saturn. The ice giants Uranus and Neptune are so named for having much more icy compounds such as water, ammonia, and methane, and some nitrogen and hydrocarbons. The presence of methane in outer layers is thought to give Neptune its blue color.
Is the sun homogeneous?
No; the center is much denser, and hotter, than the outer layers. Also, the center has a higher percentage of helium - which means that more fuel (hydrogen) has been burned up already.No; the center is much denser, and hotter, than the outer layers. Also, the center has a higher percentage of helium - which means that more fuel (hydrogen) has been burned up already.No; the center is much denser, and hotter, than the outer layers. Also, the center has a higher percentage of helium - which means that more fuel (hydrogen) has been burned up already.No; the center is much denser, and hotter, than the outer layers. Also, the center has a higher percentage of helium - which means that more fuel (hydrogen) has been burned up already.
When do scientist estimate will the sun run out of fuel?
In about 5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up See link for pictorial
When a star has fuel left and its outer layers escape into space it is a?
It is called a nova.
When a star has no fuel left and it's outer layers escape into space it is what?
It is dead. It becomes a black dwarf, just a rock.
What is a star that uses helium for fuel and has expanding?
the North star Any star that is in its red giant phase, as the fusion of helium creates so much energy that the star expands. Betelgeuse in the constellation Orion (bright star located on Orion's right "shoulder") is an excellent example.
What is the evolutionary end of red giants?
When a red giant runs out of its fuel - helium - it will blow off its outer layers while the inner core collapses to form a white dwarf. The latter will gradually radiate away its energy to become a black dwarf.
Stages of star life in order?
1. Birth 2. Main sequence star phase 3. Deplation of hydrogen and helium fuel and expansion phase 4. Dying phase : either simple ejection of outer layers or explosion as a nova 5. Last phase : Black hole, neutron star or white dwarf
Is helium in rocket fuel?
yes
When a star has no fuel left and its outer layers Escape into space it is called a what?
There are 2 names and that all depends on the mass of the start to start with. Our Sun when it dies will cast off its outer layers into what is called a Spacial Cloud. More massive starts on the order of 4 times as large as our star will die violently in what is Called a Super Nova.
Why is helium for Pressurizing Liquid-Fuel Rockets?
Because helium will not mix with hydrogen and oxygen.
The sun and the fuel it contains?
The fuel is not a regular chemical fuel, but hydrogen, which gets converted to helium through nuclear fusion, at very high temperatures.The fuel is not a regular chemical fuel, but hydrogen, which gets converted to helium through nuclear fusion, at very high temperatures.The fuel is not a regular chemical fuel, but hydrogen, which gets converted to helium through nuclear fusion, at very high temperatures.The fuel is not a regular chemical fuel, but hydrogen, which gets converted to helium through nuclear fusion, at very high temperatures.
What element is the fuel for Red Giants?
helium
