How do stars change as they grow older?

Answer 1

Every star in the Universe was born at some time. Currently, much less new stars are being born than when the Universe was young.

Answer 2

I just learned this in science i am only in 6th grade but here it is.Since there are different masses of stars there are three things that could happen to them.If it is a low mass star first it is called the main sequence which is what the sun is and that stage is when fusion happens and it lasts for billions of year.The next stage is it turns into a giant star which just means that it expands but it still makes fusion .The last stage is when it turns into a white dwarf which is just the core of the giant star but fusion does not occur but it can stay glowing and hot for milions of years.

Now if it is a High mass star one of two things can happen but they both start out the same and this is how its starts out firs it is called main sequence but it only last for millions of years may seem long but no compared to ours because it uses fusion faster.The next stage is called suprgiant which is like a giant star but mass is much larger.Now it starts to change because of all the fusion happening a supernova occurs and forms a neutron star or can form a black hole of it is extremely dense.

Hope my answer helped u out

Very good answer for a 6th grader, right now the Sun is burning Hydrogen it requires roughly 15,000,000K to do this once the Sun runs out of Hydrogen it will begin to burn Helium but in order to do this it has to increase it's core temp to roughly 30,000,000K and as a result the outer shell expands, once the helium is expended it will try to burn the oxygen, carbon, xenon etc but the Sun is not massive enough to generate the kind of temps need to burn the heavier elements (about 500,000,000K) so it will begin to shed off the outer shell and all that will remain is the white hot core that our 6th grade friend was talking about.

Answer 3

Stars change as they grow older by going through different stages of nuclear fusion, which determines their size, temperature, and brightness. In general, as a star ages, it fuses progressively heavier elements in its core, causing it to expand and become brighter. Eventually, depending on its initial mass, a star can undergo a supernova explosion, collapse into a neutron star, or evolve into a white dwarf.

Answer 4

A star is formed out of cloud of cool, dense molecular gas. In order for it to become a star, the cloud needs to collapse and increase in density.

Answer 5

a star will grow until it stops in the middle of its "life". then slowly it will get bigger.

Answer 6

the stars grow bigger by having more air added to it and then once it gets to big it blows up :)