Question

Explain the lifecycle of stars from their birth to death. Eloborate on what they would become after their death. ​

Answer 1

all are hypothetical and imagine

astronaut believe that star is form by different cloudy gasses when mix together a nuclear process takes place and this nuclear process develop an enormous amount of heat the process is continuous .Fuel supply to Sun by hydrogen gas .the size of star enlarge when it near to death and its colour become more shine.small star like Sun death is very easy and non volatile but in large star it's death is explosive and volatile.

it is believed that every day million of star form and died

hope it helps you

Answer 2

$\huge\text{\underline{Answer}}$

$\bold{ Life cycle of stars}$

Stars are made up of hydrogen and helium mainly along with little composition of some other elements.

Stars are mainly born when the gases like hydrogen and helium are collected like a big cloud in a galaxy.

The formation of protostar.1.stage

The life of stars started when the hydrogen and helium get compressed towards it's centre .

Now, the clouds of hydrogen and helium becomes so large that it is known as oort cloud.

After increasing the size the attraction forces between the hydrogen atom is also increases and the cloud is get compressed towards it's own gravitational force.

Now,it is known as Protostar.

2 Stage Formation of star

If the star is highly compressed mass than it gets compressed in future.When they started compressed the hydrogen atoms get collided which increase the temperature of star .If this process continues to be a lakh years then pressure and temperature is so high that the hydrogen atoms started to fuse together to form a big nucleus of helium.

This release a tremendous amount of energy in the form of heat and light.Now it becomes a star.

3 stage Final stage

In its final stage it get converted in to Red giant phase.

After it's life depends upon its mass and nuclear fuel left.

Condition 1.

If mass of star = mass of sun it losses it's nuclear fuel and it's core get converted in to white dwarf.

Condition 2.

If mass of star >mass of sun then it exploded as supernova After explosion it either get converted in to Neutron star or Black holes depending upon their mass and time of compressibility.

The star end their life can be understand by chandresekhar limits :-

$\boxed{\sf{ </strong><strong>Mass</strong><strong> </strong><strong>of</strong><strong> </strong><strong>star</strong><strong> </strong><strong><</strong><strong> </strong><strong>1</strong><strong>.</strong><strong>4</strong><strong>4</strong><strong> </strong><strong>times</strong><strong> </strong><strong>mass</strong><strong> </strong><strong>of</strong><strong> </strong><strong>sun</strong><strong>}}$

it end their life as Dwarf star.

$\boxed{\sf{</strong><strong>m</strong><strong>a</strong><strong>s</strong><strong>s</strong><strong> </strong><strong>of</strong><strong> </strong><strong>star</strong><strong> </strong><strong>></strong><strong> </strong><strong>1</strong><strong>.</strong><strong>4</strong><strong>4</strong><strong> </strong><strong>time</strong><strong>s</strong><strong> </strong><strong>of</strong><strong> </strong><strong>sun</strong><strong> </strong><strong>}}$

then it end their life as Neutron star or Black holes.

I cant explain whole because it is not possible so better to understand only concepts.