Stars are nonliving. They cannot live at all.
However, they do last and exist for billions of years; our own for example has been going for 4.5 billion and is expected to go at least that amount again.
A system of billions of stars held together by gravity is called a galaxy. The one we live in is called the Milky Way galaxy.
Billions of stars make up a galaxy.
There are literally billions of billions of stars. The vast majority are medium stars.
Millions or billions of years.
From 1 to 54.72 billion years
Potentially billions and billions of years.
No. Low mass stars live hundreds of billions to trillions of years. The highest mass stars may live only a few million years.
Low-mass stars can live for hundreds of billion or even trillions of years, the smaller it is the longer it lives. Medium stars, around the mass of our Sun live on the order of billions, and tens of billions of years. Massive stars live less, depending on the mass they can live for hundreds of million years, or less. The more massive it is the less it lives.
The light from the stars travels billions of years. Most of the stars we see are already gone, but the light from them us still traveling.
Stars are hotter in the core than on the surface, they are a big ball of burning gas and depending on its size, it will live for billions of years.
Thinks of a constellation as being, basically, a direction in space - the stars are not related one to another. So, some of the stars in that direction are billions of light-years away from us, and of course, billions of light-years away from the nearer stars.
A system of billions of stars held together by gravity is called a galaxy. The one we live in is called the Milky Way galaxy.
Billions of stars make up a galaxy.
There are literally billions of billions of stars. The vast majority are medium stars.
Does God really need a reason to do anything?
Millions or billions of years.
There are about 400 billion stars in galaxies