He made the below animation to show how this works. Related stories Because we go by solar days in our calendars, we count 365 days in a year. But Earth actually completes a full rotation (a ...

Planetary scientist James O'Donoghue created an animation that shows ... The closest single day to Earth is Mars, which takes 25 hours to complete one rotation.

We live on a spinning planet. Depending on latitude your individual speed varies from 0 mph at the poles to 1,040 mph (1,674 kph) at the equator. Here at 47 degrees north I'm madly spinning ...