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  1. Rotation period (astronomy) - Wikipedia

    For solid objects, such as rocky planets and asteroids, the rotation period is a single value. For gaseous or fluid bodies, such as stars and giant planets, the period of rotation varies from the object's equator …

  2. Defining Rotation and Revolution in Astronomy - ThoughtCo

    May 14, 2025 · Rotation means an object spins around its own center, like Earth does each day. Revolution is when an object moves around another, like Earth goes around the Sun. In astronomy, …

  3. Planetary rotation | Research Starters | EBSCO Research

    Each planet's rotation is defined by a specific period, which can vary significantly; for instance, Earth completes one rotation approximately every 24 hours, while Mercury takes about 58.65 Earth days.

  4. Planetary Rotation - an overview | ScienceDirect Topics

    Planetary rotation is defined as the motion of a planet or moon around its axis, characterized by its rotation speed and the orientation of this axis in space. It provides insights into the internal structure …

  5. Planetary Rotation | Explained in detail | Comparison and Guide

    Jun 20, 2024 · Rotation period, also known as rotational speed, is the time it takes a planet to complete one full spin on its axis. This time dictates the duration of a day on the planet.

  6. Chapter 2: Reference Systems - Science@NASA

    Jan 16, 2025 · Forces associated with the rotation of Earth cause the planet to be slightly oblate, displaying a bulge at the equator. The moon's gravity primarily, and to a lesser degree the Sun's …

  7. Do All Planets Rotate? Explaining the Science - Biology Insights

    Dec 2, 2025 · All major planets in our solar system rotate, spinning around an imaginary axis. This motion is a fundamental property of planetary bodies, determining the length of their day and …

  8. Glossary term: Rotation

    In general, stars (including the Sun), planets, moons, or asteroids will rotate around a fixed axis. Earth rotates around Earth's axis, which is the imaginary straight line passing through Earth's North and …

  9. Rotation

    Rotation describes the circular motion of an object around its center. There are different ways things can rotate. Dora Petronzio works at her potter's wheel in her shop in Nova Scotia, Canada. An object …

  10. Rotation - Planet Facts

    In astronomy, it is a phenomenon that various celestial bodies experience. Stars, planets and other celestial bodies all spin around on their axis. The rotation rate of planets in the solar system was first …