The Sun is a continuous Nuclear reaction. It spits off mass into space and burns it off everyday. I wonder how much less the Sun's mass reduces each day? Thus, reducing its gravitational force upon the Earth. This in turn lets us slip a bit farther out in our rotation with longer travel each year.
Will the density of the Sun reduce to a point where by it may someday encompass and burn the inner circling planets? They say that could happen many years in the future?