kidzsearch.com > wiki   Explore:images videos games  

Rotation period




KidzSearch Safe Wikipedia for Kids.
Jump to: navigation, search

In astronomy, a rotation period is the time an astronomical object takes to complete one revolution around its rotation axis relative to the background stars. For the Earth this is a sidereal day. It is different from a solar day, which is measured by the passage of the Sun across the local meridian.

Other websites