# Water Ball with Sun's Mass - It's Diameter?

1. May 8, 2013

(For recreation)

Assuming (from Wikipedia) that the mass of the Sun is 2 x $10^{30}$ Kg,

I wondered what would be the size of an equivalently-massed ideal ball of water at STP with uniform density?

I read there the Sun is about 109 Earth diameters. My water ball model calculation is ~123 Earth diameters.

2. May 8, 2013

### Staff: Mentor

The number looks reasonable, as the density of the sun is a bit above the density of water.
It is impossible to have such a ball, of course.

3. May 8, 2013