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Over 99 percent of all matter in the solar system resides inside the Sun. The figure is taken from NASA Science, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Space shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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Mondo Knows Facts

The Sun holds nearly all the mass in the solar system

Over 99 percent of all matter in the solar system resides inside the Sun

The Sun contains about 99.86 percent of the total mass of the entire solar system. Most of the tiny remaining fraction is accounted for by Jupiter and Saturn. Earth makes up only a minuscule fraction of a percent of the solar system's matter.

The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory - 20100819 — NASA/SDO (AIA) · Public domain · source

Where this comes from

NASA Science

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Tags: sun, solar system, mass

The Sun holds nearly all the mass in the solar system: the short answers

Where does this come from, and can I check it?: Over 99 percent of all matter in the solar system resides inside the Sun. The figure is taken from NASA Science, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a space fact?: Yes. It sits on the Space shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.