Some numbers are too big to actually feel. The Sun is one of them. You can read that it's "109 times wider than Earth" and nod, but the figure slides right off, because nothing in daily life is 109 times wider than anything else you care about. So try it three ways. Line Earths up shoulder to shoulder across the face of the Sun and you'd need 109 of them. Pour Earths in to fill it like a jar and you'd need over a million. And to match its weight, you'd have to pile up a third of a million Earths. That's how big the Sun is compared to Earth: not a little bigger, not a lot bigger, but a different category of object entirely.

The basic comparison, in three numbers

Here's how big the Sun is compared to Earth, by the measures that matter. Across its diameter, the Sun is about 109 times wider than our planet (NASA). By volume, the space inside it could swallow roughly 1.3 million Earths. And by mass, it weighs about 333,000 times what Earth does (NASA Sun Fact Sheet). Earth is about 12,742 kilometers across; the Sun is nearly 1.4 million. Our planet, set beside it, is a pinhead next to a beach ball.

Why "109 times wider" becomes "a million times bigger"

There's a jump in those numbers that trips people up. If the Sun is only 109 times wider, how does it hold over a million Earths, not 109? The answer is that width and volume don't grow at the same rate. Volume grows with the cube of width: make something 109 times wider and you don't get 109 times the room inside, you get 109 multiplied by itself three times, which lands you well past a million (Britannica). It's the same reason a slightly bigger moving box holds surprisingly much more. So "109 Earths across" and "1.3 million Earths inside" are two true descriptions of the very same ball.

A small caveat worth a smile: if you actually tried to pack Earth-sized spheres into the Sun, you'd lose room to the gaps between them, and the real count drops to around a million. The 1.3 million figure is for Earths melted down and poured in to fill every corner. For the count on its own, with the picture that finally makes it land, see how many Earths can fit in the sun.

The part that should stop you cold

Now the fact that reframes the whole solar system. The Sun doesn't just outweigh Earth. It outweighs everything else combined, by a landslide. The Sun holds about 99.8 percent of all the mass in the solar system (NASA). Every planet, including giant Jupiter, every moon, every asteroid, every comet, all the dust and ice and rock in the whole system, adds up to the leftover 0.2 percent. We tend to picture the solar system as the Sun plus its family of worlds. It's closer to the truth to say the solar system is the Sun, with a few crumbs orbiting in the space around it. That overwhelming mass is exactly why everything circles the Sun and not the other way around: it's the only thing heavy enough to be in charge.

And it isn't even a big star

Here's the twist that puts our own giant in its place. For all that it dwarfs Earth, the Sun is, as stars go, thoroughly average, a middling, middle-aged star of no special size. It only looks colossal because it sits so close. Scattered across the galaxy are stars hundreds of times wider than the Sun, balls of gas (the same searing hydrogen and helium our own Sun is made of) so large that if you dropped one where the Sun is, it would swallow the orbits of the inner planets whole. The Sun is a giant to us and a regular to the universe. Stand on Earth and it fills the sky; step back to the scale of the galaxy and our star becomes one ordinary point of light among hundreds of billions.

Keep wondering: the scale only gets stranger from here, from what happens when the Sun finally dies to what would happen if it simply disappeared, and outward into how big the universe really is.