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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Heavy elements are primarily produced in the cores of massive stars through nuclear fusion processes during their lifetimes. Elements heavier than iron are often formed through supernova explosions, where the intense heat and pressure create the conditions necessary for the fusion of lighter elements. Additionally, elements like gold and platinum can also be produced in neutron star collisions, where the rapid neutron capture process, or r-process, takes place.
The building blocks of the universe are called atoms. Atoms are made up of protons, neutrons, and electrons. These particles interact to form all the elements and matter in the universe.
Mainly hydrogen and helium - which were also the main elements in the early Universe.
The 5 most abundant elements in the universe are hydrogen (about 75%), helium (about 23%), oxygen (about 1%), carbon (about 0.5%), and nitrogen (about 0.3%). These elements make up the majority of atomic matter in the universe.
is found in the form of hydrogen and helium. These elements were created during the Big Bang, and all other elements found in the universe were formed through processes like nuclear fusion in stars. Only a small fraction of the universe is made up of heavier elements like carbon, oxygen, and iron.
Most of the visible universe is made up of hydrogen and helium. These elements were formed during the Big Bang and make up about 98% of all visible matter in the universe.