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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.
Why don't more heavy elements form smaller stars like brown and white dwarfs?
Heavy elements typically form in the cores of massive stars during nucleosynthesis processes, which require high temperatures and pressures found in larger stellar environments. Smaller stars like brown and white dwarfs lack sufficient mass to reach the necessary conditions for fusion of heavy elements; they primarily burn hydrogen and helium. As a result, they do not undergo the complex fusion processes that create heavier elements, leading to a predominance of lighter elements in these smaller stars. When massive stars end their life cycles, they explode as supernovae, dispersing heavy elements into the universe, while dwarfs remain largely composed of lighter elements.
99 percent of the known 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.
What is first elementslight elements and heavy elements?
The light elements in the universe, such as hydrogen and helium, were created during the Big Bang. Heavy elements, like carbon, oxygen, and iron, were formed in the cores of stars through nuclear fusion processes.
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.
What were the heavy elements in the universe formed by?
Heavy elements in the universe were primarily formed through processes such as stellar nucleosynthesis and supernova explosions. In stars, lighter elements fuse under extreme temperatures and pressures to create heavier ones, with elements beyond iron typically formed during supernova events when massive stars explode. Additionally, neutron capture processes, like the r-process and s-process, contribute to the formation of various heavy elements. These processes occur over cosmic timescales, contributing to the elemental diversity observed in the universe today.
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.
Where in the universe are heavy elements with masses greater that that of helium being produced today?
In the interior of certain massive stars.
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.
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.
The building blocks of the universe are called?
the building blocks of the universe are called chemical elements or just 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.
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.
