Is Jupiter’s equatorial diameter larger than the Sun’s diameter?
No. Jupiter, at 142,984 km, is narrower than the Sun, at 1,392,000 km, which is about 9.7 times as wide.
The duel opens first in a practice round of ten; practice never changes your daily streak.
Why it surprises
Jupiter is the giant of the solar system’s planets, more than eleven times as wide as Earth, and some people wonder whether it might rival the Sun in size. It does not come close. Across its equator Jupiter measures about 142,984 km; the Sun is about 1,392,000 km wide, nearly ten times as much. Put about ten Jupiters side by side and they would only just span the Sun. Being the largest planet and being the largest object in the solar system are different titles: the Sun is a star, in a different class altogether. Because volume grows with the cube of width, the Sun’s volume is more than 900 times Jupiter’s. This duel compares diameters only, not mass or how large each looks in the sky.
Sources for this explanation
- European Space Agency (ESA): esa.int, checked 25 October 2026
- NASA: science.nasa.gov, checked 25 October 2026
Where the numbers come from
Each value was checked against two independent sources, quoted on its page. Details: Jupiter and The Sun.
Spotted a mistake? Tell us; a correction gets a new revision.
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