Question

is sun expanding? if yes, then is its mass changing? how?

Answer 1

As the Sun converts hydrogen into helium by nuclear fusion there is a decrease in the Sun's mass, M and the release of energy through electromagnetic and particle radiation. The continued, steady loss of mass from the Sun results in a reduced gravitational attraction and an expansion of the orbits of the planets

Answer 2

Answer:

yes ! if sun will expand then it is normally thing that mass of sun will increase by its structure