Mondo Knows Facts
Jupiter has the shortest day of any solar system planet
The gas giant completes a full rotation in under ten hours
Jupiter spins faster than any other planet in the solar system, completing one rotation in roughly 9 hours and 55 minutes. This rapid rotation causes the gas giant to bulge at its equator and flatten slightly at its poles, creating an oblate spheroid shape.
Where this comes from
Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.
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A day on Venus is longer than its yearVenus turns so slowly that its day outlasts its trip around the SunUranus rotates almost entirely on its sideAn axial tilt of 98 degrees causes extreme seasons lasting over 20 yearsMercury experiences extreme surface temperature swingsWithout a thick atmosphere Mercury swings from scorching days to freezing nightsSaturn is the only solar system planet less dense than waterThe massive gas giant would float if placed in a vast oceanic basinEuropa may hold twice as much water as all Earth oceans combinedA deep saltwater ocean sits concealed beneath the icy crust of Jupiter moonGanymede is the largest moon in the solar systemJupiter giant satellite is larger than both Mercury and Pluto
Tags: jupiter, rotation, planets
Jupiter has the shortest day of any solar system planet: the short answers
- Where does this come from, and can I check it?
- The gas giant completes a full rotation in under ten hours. 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.
