How big is the Sun? Roomy enough to fit 1.3 million Earths inside it.

The Sun is big. It's 700,000 km in radius, while the Earth's is about 6400 km. Volume goes as the cube of the radius, so if you take the ratio and cube it - (700000 / 6400)^3 - you get about 1.3 million. That's how many Earths could fit inside our star.

Heck, the Sun routinely makes sunspots bigger than our whole planet!