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  2. www.scienceabc.com › nature › universeRetrograde Rotation: Which Planets Rotate Backward? - Science ABC

    Oct 19, 2023 · Retrograde rotation is the opposite of that (clockwise). You can learn more about retrograde motion here. Most planets in our solar system, including Earth, rotate counter-clockwise or prograde direction, but Venus and Uranus are said to have a retrograde or clockwise rotation around their axes.

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  3. skyandtelescope.org › astronomy-news › the-truthThe Truth About Neptune's Spin - Sky & Telescope

    Jul 11, 2011 · But by tracking the positions of two prominent features in Neptune's atmosphere for more than 20 years, Erich Karkoschka (University of Arizona) has produced a new estimate for one complete rotation: 15 hours 57 minutes 59 seconds.

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  5. www.astronomy.com › science › clocking-neptunes-spinClocking Neptune's spin | Astronomy.com

    Jun 30, 2011 · A day on Neptune lasts precisely 15 hours, 57 minutes, and 59 seconds, according to the first accurate measurement of its rotational period made by Erich Karkoschka from University of Arizona,...

  6. earthsky.org › space › clocking-neptunes-mysterious-spinClocking Neptune’s mysterious spin - EarthSky

    Jul 3, 2011 · A day on Neptune lasts 15 hours, 57 minutes and 59 seconds, according to the first accurate measurement of its rotational period. University of Arizona (UA) planetary scientist Erich Karkoschka’s...

  7. phys.org › news › 2011-06-clocking-neptuneClocking Neptune's spin - Phys.org

    Jun 29, 2011 · (PhysOrg.com) -- By tracking atmospheric features on Neptune, a UA planetary scientist has accurately determined the planet's rotation, a feat that had not been previously achieved for any of...

  8. solarsystem.nasa.gov › planets › neptuneIn Depth | Neptune – NASA Solar System Exploration

    One day on Neptune takes about 16 hours (the time it takes for Neptune to rotate or spin once). And Neptune makes a complete orbit around the Sun (a year in Neptunian time) in about 165 Earth years (60,190 Earth days). Sometimes Neptune is even farther from the Sun than dwarf planet Pluto.

  9. www.sciencefocus.com › space › retrogradeRetrograde motion of the planets: Everything you need to know

    Retrograde motion of the planets: Everything you need to know - BBC Science Focus Magazine.