For decades, scientists have been struggling to determine how long exactly does a Saturn day last. While measuring how long it takes for a full axis rotation may be easy in case of solid planets like Mars or Earth, things get a bit trickier when it comes to the gas giant. However, a group of Israeli scientists claims to have come with the exact measurement.
Gas giants like Saturn lack a solid surface feature than can be easier tracked to determine to determine the length of a day. Saturn’s surface is covered instead by a thick layer of clouds, continuously on the move, so any visual measurement has to be ruled out first.