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During the main life cycle of a star, no elements heavier than iron can be created, and that's only in very massive stars (our sun is only massive enough to fuse hydrogen into helium). Your question is a very good one, and if you thought of it on your own, you should be proud. Every element heavier than iron is created when the star dies. Specifically, when it becomes a super-nova. When all the lighter elements have been fused, the star can't generate enough energy to resist its own gravity, so it collapses in on itself. The result is a sudden gigantic spike in pressure that creates all the heavier elements. As if it weren't cool enough that we're all made from star-stuff, a good bit of us is made from supernovae, too!

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Q: If a star runs out of fuel when all of the elements inside it are fused to iron how are the heavier elements created?
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Related questions

What do hydrogen bombs ands stars both produce nuclear with?

The process of fusion, where hydrogen is fused into heavier elements, releasing energy in the process.


Where did flourine come from?

Elements heavier than hydrogen were created over millions of years of nuclear fusion at the center of stars around the universe. As hydrogen nuclei are fused, they create helium atoms that can in turn also be fused under extreme amounts of pressure and temperature to make heavier elements, the cycle continues until elements such as iron are created at which point the star usually collapses. Elements more dense than this are created at the center of exploding stars under the pressure of one of the more powerful forces of the universe. Florine, being lighter than iron would be in the first category, having been fused from two other elements at the center of still active stars.


Why is iron the only element that can be produced in stars?

All elements (except hydrogen) are produced in stars through nuclear fusion (under tremendous heat, two hydrogen atoms fuse into one helium plus release pure energy). When the hydrogen is all fused, helium is fused into heavier elements at a higher temperature, then those are fused and so on until we get to iron. Iron is the element that will cause a star to collapse and then explode violently in a supernova. The explosion causes further fusion and creates still heavier elements.


What happens when two nuclei that are heavier than iron are fused?

The two nuclei's are lighter than iron then when they are fused together they will release energy. If the two nuclei's are heavier than iron they will absorb energy when fused.


How is a supernova related to matter found on earth?

A supernova is a star that explodes. Stars about the size of our Sun explode when they run out of "fuel". The fuel they have is Hydrogen which they fuse into Helium and thus convert mass into energy (they shine brightly), Then the Helium and some Hydrogen are fused into heavier elements (Lithium etc) making more energy. All elements heavier than Carbon and lighter than Iron are made in the supernova explosion that comes at the end of the star's "life". Heavier stars will make even heavier elements. The Earth is mostly made of these heavier elements. We are all stardust.


Which nuclear fuel is there in the sun?

At this point in time hydrogen is being fused into helium. Many, many years down the line, as the hydrogen runs out, the sun will begin fusing heavier and heavier elements for fuel. At least to iron.


Through which kind of nuclear reaction does the sun produce energy?

Nuclear fusion. Lighter elements such as hydrogen atoms get fused to produce heavier elements such as helium. While doing so enormous heat is produced.


What percent of the sun is water?

None. The sun is made of pure elements, mostly hydrogen, which fuse together, creating energy in the form of heat and light. When the hydrogen has fused into helium, the helium fuses into the heavier elements. Eventually, a couple billion years in the future, the sun will be made almost entirely of iron, at which point the fusion will cease and the sun will DIE. But you won't be around to see it. At no point does water form without it being immediately consumed and fused into heavier elements.


Is fusion an endothermic reaction?

It depends on what is being fused. Fusion usually takes place with elements lighter than iron, mostly hydrogen. in those cases it is exothermic. Fusin elements heavier than iron is endothermic.


What is the heviest element that can be made in stars center?

While it is still a star? Iron. Everything heavier must be fused from lighter elements in a supernova explosion, which blows the star apart.


How does stars light up?

Inside stars atoms are fused together to form heavier elements in a process called nuclear fusion. Our very own Sun is our closest star. Our Sun fuses hydrogen atoms together to form helium. Our Sun will eventually produce heavier elements when it reaches a certain age, and will in fact create even heavier elements as it dies! This process of fusion releases energy in the form of heat and light. The light travels from the star to your eye and you can see it. Interestingly, because light takes time to travel this distance, when you look at stars you are actually seeing them as they were in the past.


What is Aluminum caused by the big bang?

It is believed that right after the Big Bang, some of the normal hydrogen fused to deuterium, helium, and perhaps a small amount of lithium. No significant amounts of heavier elements was produced during the Big Bang. Most helium, as well as metals (i.e., anything heavier than helium) are the result of nuclear fusion in stars; the heavier elements are the result of supernova explosions.