January 10, 2023

Mercury has the shortest orbit around the sun. Mercury only takes 88 earth days to complete its trip around the sun. While Mercury’s year is short a day on Mercury is equal to 58 Earth days.

This animation shows the orbital resonance of Mercury. As Mercury orbits the Sun once, it rotates on its axis 1.5 times. This means that for every 2 orbits around Earth, Mercury spins on its axis 3 times, which is called a 2:3 resonance. Image credit: Wikicommons/Age234