Where does this come from, and can I check it?

Venus turns so slowly that its day outlasts its trip around 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.

Mondo Knows Facts

A day on Venus is longer than its year

Venus turns so slowly that its day outlasts its trip around the Sun

Venus takes about 243 Earth days to rotate once on its axis, but only about 225 Earth days to orbit the Sun. By the time one Venusian day finishes, the planet has already completed a full year. It also rotates in the opposite direction to most other solar system planets.

Where this comes from

NASA Science

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

Go further

Space & Astronomy trivia Age Calculator

More facts like this

Jupiter has the shortest day of any solar system planetThe gas giant completes a full rotation in under ten hours Venus is the hottest planet in the solar systemThick greenhouse gases trap heat to make Venus hotter than Mercury Uranus rotates almost entirely on its sideAn axial tilt of 98 degrees causes extreme seasons lasting over 20 years Venus rotates backwards relative to most solar system planetsOn Venus the Sun rises in the west and sets in the east Mercury experiences extreme surface temperature swingsWithout a thick atmosphere Mercury swings from scorching days to freezing nights Saturn is the only solar system planet less dense than waterThe massive gas giant would float if placed in a vast oceanic basin

Tags: venus, planets, rotation

A day on Venus is longer than its year: the short answers

Where does this come from, and can I check it?: Venus turns so slowly that its day outlasts its trip around 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.