Among the ancient Greeks, several of the Pythagorean school believed in the rotation of Earth rather than the apparent diurnal rotation of the heavens. Perhaps the first was See more

Earth's original rotation was a vestige of the original angular momentum of the cloud of dust, rocks and gas that coalesced to form the See more

1. ^ See Fallexperimente zum Nachweis der Erdrotation (German Wikipedia article).
2. ^ When Earth's eccentricity exceeds 0.047 and perihelion is at an appropriate equinox or solstice, only one period with one peak balances … See more

True solar day
Earth's rotation period relative to the Sun (solar noon to solar noon) is its true solar day or apparent solar day. It depends on Earth's orbital motion and is thus affected by changes in the eccentricity and inclination See more

In rotational axis
Earth's rotation axis moves with respect to the fixed stars (inertial space); the components of this motion are precession and See more

• Allais effect
• Diurnal cycle
• Earth's orbit
• Earth orientation parameters
• Formation and evolution of the Solar System See more

• USNO Earth Orientation Archived 14 May 2011 at the Wayback Machine new site, being populated
• USNO IERS old site, to be abandoned
• IERS Earth Orientation Center: Earth rotation data and interactive analysis See more