As the sun shines, it is losing mass by the conversion of hydrogen to helium and the resultant radiation of energy which is equal to some amount of mass according to the most well know formula in history.
As the sun loses mass it seems reasonable that a body orbiting it would move in a larger orbit.
But what do I know?
8 posted on 06/01/2009 7:16:23 PM PDT by muir_redwoods
( Hey, remember the last head of state who dictated the design of automobiles?)