MERCURY CAN'T SLOW DOWN! | Why Planets Orbit Fast | COSMOLINGS

Can a planet ever stop? In this episode: Mercury races Neptune around the Sun, finishes first — and finds out he can't slow down, because the Sun holds every planet on an invisible string. Short string, fast. Long string, slow. Science word: gravity Real fact: Mercury orbits the Sun every 88 days at about 47 km per second — the fastest planet. Neptune takes 165 years. (NASA Planetary Fact Sheet) Characters: Mercury, Neptune, Earth, Sun Chapters: 0:00 Can a planet ever stop? 0:23 The race around the Sun 1:20 Why can't Mercury slow down? 1:40 The Sun pulls on everyone 2:16 The invisible string (gravity) 3:11 Neptune finishes one lap 4:08 One thing to remember Playlist: Science Stories COSMOLINGS — Where Space Comes Alive. Real space science, told as stories, for kids 5–8. @cosmolingstv #Cosmolings #PlanetsForKids #SpaceForKids #ScienceForKids #Mercury