You know, I'm pretty sure Immortal's Handbook has stats for the Sun's HP and Hardness...
As well as the same for THE KNOWN UNIVERSE.
You could pick up the universe if you had a Strength of at least 855, but I digress...
On the subject of hitting things, obviously the Sun has Distant Shot.
Which begs the question...
Can the Sun see the world? Or does it need the moon to act as its spotter?