[Jaco du Preez]

Jaco du Preez asked the Naked Scientists:

How big is the Sun, and how hot is it?

What do you think?

[lyner]

Try:
http://www.suntrek.org/sun-as-a-star/sun-and-earth/comparing-size-sun-and-earth.shtml
And many, many more links: Google is very good for this sort of thing.