I WONDER - How Old Is The Sun?

The video explains the sun's current position in its life cycle, being approximately 4.5 billion years old and in the middle of its life span. It describes the future stages of the sun, which will occur in about 5 billion years, transforming into a red giant and eventually shrinking to become a white dwarf star.

What will the sun be known as after it shrinks down to the size of the Earth?

Describe the characteristics of a white dwarf star.