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As heavier elements are formed by fusion a massive star expands into?
As heavier elements are formed by fusion in the core, a massive star will eventually exhaust its nuclear fuel and trigger a supernova explosion. This explosion will generate immense energy, leading to the production and dispersal of even more heavy elements into space.
Why is the fusion of iron a problem for a star?
Unlike all lighter elements, fusing iron consumes more energy than it produces. Once a star's core starts iron fusion it stops producing energy and collapses. The collapse then blows away the outer layers of the star in a massive explosion called a supernova.
What is a massive collapsed star?
A massive collapsed star is a dead star.
Can iron undergo fusion in any star?
No. Only the most massive stars can fuse iron.
Is the main sequence lifetime of a low mass star the same as the lifetime of the sun?
No. The less massive a star, the longer it will last. A main sequence star half the mass of the sun can be expected to last about 5 times longer.
The last two elements that a massive star produces are hydrogen and helium why is this the last reaction?
Hydrogen and helium are the lightest and most abundant elements in the universe. In the core of a massive star undergoing nuclear fusion, hydrogen and helium are fused into heavier elements like carbon, oxygen, and iron. Once the star reaches the stage where it can no longer sustain fusion reactions to produce heavier elements, hydrogen and helium remain as the last elements in its core before it undergoes a supernova explosion.
If a star is massive enough what can result after it produces a supernova?
If a star is massive enough, after it produces a supernova it can either leave behind a neutron star or collapse into a black hole, depending on the mass of the original star.
What star produces all of the elements from helium through iron?
The star that produces all elements from helium through iron is typically a massive star during its life cycle. In the core of these stars, nuclear fusion processes combine lighter elements into heavier ones, a process known as nucleosynthesis. This occurs during different stages of a star's life, particularly in the late stages before the star explodes in a supernova, where elements up to iron are formed. Heavier elements beyond iron are created in the supernova explosion itself.
What is the combining of less massive elements on a star?
Nuclear fusion.
As heavier elements are formed by fusion a massive star expands into?
As heavier elements are formed by fusion in the core, a massive star will eventually exhaust its nuclear fuel and trigger a supernova explosion. This explosion will generate immense energy, leading to the production and dispersal of even more heavy elements into space.
As heavier elements are formed by fusion a massive star expands into a what?
A super giant
How long does the main phase last in a massive star?
The more massive the shorter - down to just millions of years.
What is the life span of a star?
It varies considerably. A star similar to our sun will last about 10 billion years. The least massive stars may last trillions of years wile the most massive may last only a few million.
When heavier elements form by fussion a massive star expands into a what?
When heavier elements form by fusion, a massive star expands into a red supergiant. This is a stage of stellar evolution where the star increases in size and becomes much more luminous.
What causes the sun to burn?
hydrogen is at the heart of a star, meaning that as it reacts it produces a massive amount of heat and light
what causes the sun burn?
hydrogen is at the heart of a star, meaning that as it reacts it produces a massive amount of heat and light
Why is the fusion of iron a problem for a star?
Unlike all lighter elements, fusing iron consumes more energy than it produces. Once a star's core starts iron fusion it stops producing energy and collapses. The collapse then blows away the outer layers of the star in a massive explosion called a supernova.
