Mostly lighter elements, such as hydrogen (one proton) and helium (two protons). The helium found in young stars comes from nuclear fusion reactions where 2 hydrogens fuse to make a helium atom.
Hydrogen and helium are thought to be formed during the Big Bang. We also know that helium is formed in stars during the process of stellar evolution. The other elements formed in stars during stellar evolution and end-of-life stellar events (like a supernova). It could be said that with the exception of hydrogen, all the elements formed in stars during one phase or another of the life of stars. This though minute quantities of some isotopes that are found in nature appear in the decay chains of other isotopes and were not themselves created in stars as described.
The heavy elements found in the Sun and Earth were created through nuclear fusion processes in the cores of stars. These elements play a crucial role in the formation of planets and life as we know it. Studying them helps scientists understand the origin and evolution of our solar system.
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.
By nuclear fusion and neutron captureRight now the sun is fusing hydrogen into helium.Later in its life it will fuse helium into carbon.All elements are made inside stars. Massive stars are more efficient than low mass stars at making elements heavier than carbon.
The elements on the periodic table were created by stars through nuclear fusion. We use the term stellar nucleosynthesis to describe what stars are doing through fusion. Stars fuse hydrogen into helium, and then start making heavier elements by a different fusion process. But stars can only make elements up through iron. They can't make the heavier elements. Enter the supernova. A supernova is that "big blast" that occurs at the end of the life of some stars. In a supernova, the trans-iron elements are formed. That is, all the elements heavier than iron are formed in a supernova. Because the elements heavier than iron are formed in a supernova, we can say that there is a relationship between the supernova and the periodic table of elements.
Yes, sometime in the beginning of the Sailor Stars season.
The most common element in the Universe - and in most stars - is hydrogen. Stars have smaller amounts of helium, and still smaller amounts of "metals" (heavier elements). Some stars may have burnt out their hydrogen, and consist mainly of helium and heavier elements. It really depends on the star's stage in its life cycle.
Carbon, oxygen, and iron nuclei are commonly found in stars because they are formed through nuclear fusion processes in the cores of stars. Carbon and oxygen are produced through fusion reactions in stars of medium mass, while iron is formed in the later stages of a star's life through various fusion processes. These elements are essential building blocks for heavier elements and are crucial for the evolution of stars.
carbon nitrogen hydrogen and oxygen are basis of life
The first supernova was probably about 450 million years after the big bang, when the first, massive stars (Population III stars) exploded filling the Universe with the first heavy elements. These elements were "absorbed" by population II stars, which again exploded as supernovae. These metal enriched stars populated the Universe with the rest of the known elements. So supernova were around well before life on Earth. In fact without supernovae there would be NO life on Earth.
Yes, supernovas are responsible for creating and dispersing elements critical for life, such as carbon, oxygen, and iron, into the universe. These elements are formed in the extreme conditions present during the explosive death of massive stars and are then incorporated into new stars, planets, and eventually life forms.
Iron is formed in nature through a process called nuclear fusion in the cores of massive stars. When these stars reach the end of their life cycle, they explode in a supernova, releasing iron and other elements into space. Over time, these elements can come together to form iron-rich minerals and ores that are found on Earth.