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a series of stars
They are formed inside of stars.
Heavier elements are formed from hydrogen, the most abundant element in the universe, through a process called nuclear fusion. There are machines or structures in the universe that do this, and we call them stars. It is the process within stars, stellar nucleosynthesis, that allows heavier elements to be created up through iron. Elements heavier than iron are formed in supernova events. Use the links below to learn more.
The elements carbon, oxygen, and iron were formed in the interiors of stars that have since dies and exploded, spreading their contents through dust clouds that later formed other stars and solar systems.
The change is mainly chronological ... in the beginning there was only hydrogen and helium, then as stars aged and exploded, heavier elements were introduced into the interstellar medium, and were thus incorporated into newer stars.
All elements up to Iron are produced by smaller stars. heavier elements (everything heavier then iron) are produced from larger stars when they go supernova.
All elements up to Iron are produced by smaller stars. heavier elements (everything heavier then iron) are produced from larger stars when they go supernova.
These fusion (carbon , nitrogen , and oxygen) reactions form nuclei of sightly heavier elements.
Most stars that are around today are made of old material from dead stars. Those old stars produced oxygen as a product once they started fusing helium and heavier elements. Some old stars are currently producing oxygen through nuclear fusion.
True
I am not aware of any specific element "signaling" this. Towards the end of a stars life, however, relatively large amounts of heavier elements are produced.
It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.
True. Our Sun will eventually produce elements as heavy as iron.
The two main elements in stars are Hydrogen and Helium. Stars start out as mostly Hydrogen and produce Helium. There are less amounts of heavier elements like Oxygen, Neon and Iron in stars
Elements that are formed in cool stars are heavy but not heavier than iron. (Elements that are heavier than iron are formed in a supernova.)
They were formed in supernovae.
Absolutely,Most stars consist of hydrogen at the beginning which is burned into helium and heavier elements like oxygen, carbon, and iron depending on the size of the star.