Question

During its lifespan, what characteristics of the sun will change

Answer 1

During its lifepsan, the sun's core would keep contracting and heating up.

The temperature will keep increasing to the point where the temperature outside the core will get to hydrogen fusion temperatures.
The sun will grow in surface and eventually became the Red Giant

Answer 2

Answer:

Explanation:

Sun is one of the star present in universe and liken other stars it has also a lifespan.

Nuclear fusion reaction takes place inside its core in which hydrogen fuses into helium, but this process in not everlasting.

As more and more hydrogen fuses to form helium its core will shrink  increasing the temperature and allowing the outer layer of the Sun to move inside to core and will experience a larger gravitational force.

Over the years, various characteristics of Sun will change.

- Its brightness will increase up to 10% in 1.1 billion years

- It will shrink

- Its temperature will reach to 30,000 K.

- When iron mass in Sun is of 1.38 times of Sun, it will implode releasing a huge amount of energy.