Question

Why the sun is become big slowly​

Answer 1

Answer:

Because the Sun continues to 'burn' hydrogen into helium in its core, the core slowly collapses and heats up, causing the outer layers of the Sun to grow larger. ... It is a very gradual process, and in the last 4 billion years, the Sun has barely grown by perhaps 20 percent at most.

Answer 2

Because the Sun continues to 'burn' hydrogen into helium in its core, the core slowly collapses and heats up, causing the outer layers of the Sun to grow larger. ... It is a very gradual process, and in the last 4 billion years, the Sun has barely grown by perhaps 20 percent at most.