Question

How would you describe the life cycle of a star?

Answer 1

Hint : A star is the object in space consisting of a luminous spheroid of plasma held together by its own gravity. The closest star to Earth is that the Sun. Many other stars are visible to the eye in the dark, but thanks to their immense distance from Earth they seem as fixed points of sunshine within the sky.

Complete Step By Step Answer:
A star like our Sun will become a white dwarf star when it's exhausted its fuel. At the top of the nuclear burning stage, there is such a star that expels most of its outer material (creating a planetary nebula) until only the recent core remains, which then settles right down to become a young white dwarf star .
 A typical white dwarf star is half as massive because the Sun, yet only slightly bigger than the world. This makes white dwarfs one among the densest sorts of matter, surpassed only by neutron stars.
White dwarfs haven't any thanks to keep them-selves hot (unless they accrete matter from other accessible stars); therefore, they calm down over the course of the many billions of years. Eventually, such stars cool completely and become black dwarfs. Black dwarfs don't radiate in the least.

Note :
Stars live different lengths of your time, counting on how big they're. A star like our sun lives for about 10 billion years, while a star which weighs 20 times the maximum amount lives only 10 million years, a few thousand as long. Stars start their lives as the dense clouds of gas and mud.