STARS

The Sun makes up 99.8% of all the mass in our solar system.

Everything else - all the planets, moons, asteroids - is just 0.2%.

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The Sun makes up 99.8% of all the mass in our solar system.
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When you look at a diagram of the solar system, the Sun, planets, moons, and asteroids all look like roughly similar things - different sizes, but comparable. The reality is wildly different. The Sun is by far the biggest thing here, and almost everything else is rounding error.

The Sun accounts for about 99.8% of the total mass of the entire solar system. That means every planet, every moon, every dwarf planet, every asteroid, every comet, every speck of dust orbiting the Sun, all summed together - adds up to just 0.2% of what’s here.

And of that 0.2%, most is Jupiter, which is about 71% of the non-Sun mass. Add Saturn, and you have most of what’s left. Earth, mighty home of all known life, accounts for about 0.0003% of the solar system. The solar system is, very honestly, the Sun plus some accessories.