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Which planet has the fastest orbital speed around the Sun?
SpacePlanets
Quick Answer
Mercury travels fastest around the Sun, averaging about 47.4 km/s. Its short orbit gives it a year of only 88 Earth days.
The Full Story
Mercury is the speed champion among the planets in terms of orbit. It moves around the Sun at an average speed of about 47.4 kilometres per second, faster than any other planet. Because it is so close to the Sun, gravity makes Mercury race along its path and complete an orbit in just 88 Earth days. That makes Mercury's year the shortest in the Solar System.
Key Facts
1.Orbital speed: about 47.4 km/s
2.Year length: 88 Earth days
3.Mercury is the fastest-orbiting planet
YouTube Angle
Suggested video title for this topic:
"The fastest planet around the Sun is a tiny world near the star."