Tuesday, February 4, 2020

Earth physically rotates in 23hours 56min relative to distant stars – a Sidereal Day, BUT it takes 24hours to rotate relative to the Sun – a Solar Day. The difference? Earth orbits the Sun, so the Sun appears to move (down, in the vid), which means Earth needs +4mins to "catch up"! [OC]

Earth physically rotates in 23hours 56min relative to distant stars – a Sidereal Day, BUT it takes 24hours to rotate relative to the Sun – a Solar Day. The difference? Earth orbits the Sun, so the Sun appears to move (down, in the vid), which means Earth needs +4mins to "catch up"! [OC]: from r/aww

[Collection]
Earth physically rotates in 23hours 56min relative to distant stars – a Sidereal Day, BUT it takes 24hours to rotate relative to the Sun – a Solar Day. The difference? Earth orbits the Sun, so the Sun appears to move (down, in the vid), which means Earth needs +4mins to submitted by /u/physicsJ
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