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Light elements are made in light weight stars via stellar nucleosynthesis. Elements as heavy as iron form in the cores of massive stars. Anything heavier than iron requires a supernova--the collapse and explosion of a super massive star.
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∙ 12y ago
Wiki User
∙ 13y agocentral cores of stars
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Why is the sun made up of hydrogen and helium?
Hydrogen and helium are by far the most abundant elements in the universe. Therefore stars such as the sun are made almost entirely of those elements.
The building blocks of the universe are called?
the building blocks of the universe are called chemical elements or just elements
What are all of the gas giants atmosphere made up of?
Mainly hydrogen and helium - which were also the main elements in the early Universe.
What are the 5 most abundant elements that make up atomic matter in the universe and what approximate percentages do they occur?
The six most common elements in our galaxy are as follows:Hydrogen: 74%Helium: 24%Oxygen: 1.04%Carbon: 0.42%Neon: 0.13%Iron: 0.11%These values, obtained by spectroscopy, will give accurate estimates for local regions of the universe.The abundance of elements in more distant galaxies will have lower percentages of heavy elements (ie heavier than Helium) as they have had a shorter period of time to accumulate heavy elements from stellar nucleosynthesis.
What are the stars purpose?
The stars -or anything in the universe, for that matter- do not have a purpose. The concept of "purpose" is a man-made concept. The stars exist because gasses and other elements coagulated to form them.
What are inner planets made of?
Heavy elements.
How were the heavy elements from iron to uranium made?
Up to uranium elements are made by stellar nuclear synthesis; after uranium elements are man made.
Does fog from dry ice have elements?
Yes it does. Everything in the universe is made up of elements. Elements are a combination of atoms.
What would the chemical composition of the Universe be like if the only nuclear reactions that had ever occurred in stars had been those involved in energy production?
All elements heavier than iron are made by nuclear reactions that consume energy rather than producing it, so the universe that you describe would have no heavy elements.
How would the universe be different if massive starts didnt explode?
We wouldn't have the heavy elements... and as a result, we wouldn't exist.
Where in the universe are heavy elements with masses greater that that of helium being produced today?
In the interior of certain massive stars.
Are all chemicals made in the sun?
The universe is made of hydrogen with a small percentage helium. Elements heavier than helium are made in stars (not only the Sun). We will never see any heavy elements made by our Sun, but perhaps some civilization will. The elements we use, up to iron in atomic weight are made in stars by fusion during their normal lifetimes. Elements heavier than iron are made only when stars explode. The earliest solar systems in the early universe consisted only of hydrogen and helium. We live in a solar system since made of material tht has recycled once or twice since we know that the rubble surrounding our Sun has iron and heavier elements.
Why is it likely that life did not form during the very early history of the universe?
In the early Universe, there were no heavy elements around - all the matter of the Universe was in the form of hydrogen, helium, and small amounts of lithium; until the first stars formed, created these heavier elements, and put them out into space when they exploded as supernovae.
How would the universe be be different if massive stars did not explode at the ends of their lives?
Well neither, you or I would exist. Without the influx of heavy elements, the Universe would be a very sterile place.
How would the universe be different if massive stars did not explode at the end of their lives?
Well neither, you or I would exist. Without the influx of heavy elements, the Universe would be a very sterile place.
Why do astronomers believe that globular clusters are made of old stars?
Astronomers believe the globular clusters are made of old stars because of the lack of heavy elements. The heavy element is very abundant in stars like our sun, so the theory is the globular cluster must be older and formed in a more primitive universe.
What element has the most effect in universe?
Hydrogen - from it all other elements are made in the stars
