Hydrogen and some of the helium is the basic answer.
Potentially billions and billions of years.
a billions of stars
All elements up to Iron are found in very star (except for very young stars as they have not reached that point yet). Though most of the elements are hydrogen and helium.
Galaxies are made up of billions to trillions of stars.
There is only one sun and so the name given to it is the sun. It is a star, like billions and billions of other stars.
I cannot understand your question. But, the stars are billions and billions of miles away from us, except the Sun, of course. Scientists called astronomers DO name and number the stars. There is only time enough to number a tiny portion of all the stars. Just in our Milky Way galaxy there are billions of stars. Think about the fact that there are billions of other galaxies in the universe.
All of them except hydrogen.
In stars (except for hydrogen and helium).
The original element is hydrogen. All others were synthesized ("cooked") in the interiors of stars, after the stars contracted out of clouds of hydrogen.
Billions of stars make up a galaxy.
There are literally billions of billions of stars. The vast majority are medium stars.
A galaxy contains billions of stars. A universe contains billions of galaxies.
You can't list "all the stars" in a constellation; there are billions upon billions of them.
Because they are billions and billions and billions of miles away from us.
The universe.
every galixy has billions of stars
galaxies