Estimation quiz!

[EdS2]

Here's one that might tax the most mathematical, and also needs some not very general knowledge: how many Jupiters could fit into the (volume of the) Sun?

(The readily searchable answer for this assumes we just compare volumes, which is as wrong as anyone with a jar of marbles can tell you.)

Or, something which is actually within the bounds of present mathematical knowledge, and closer to everyday experience: how many Moons could fit into the Earth?