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Which planet has the fastest orbital speed?
Quick Answer
Mercury moves fastest around the Sun, with an average orbital speed of about 47.4 km/s. It zips around the Sun in only 88 Earth days.
The Full Story
Mercury is the fastest planet in orbit because it is closest to the Sun and experiences the strongest gravitational pull. Its average orbital speed is about 47.4 kilometers per second, much faster than Earth’s 29.8 km/s. That speed lets Mercury complete one orbit in just 88 Earth days. It is a classic example of Kepler’s laws in action.
Key Facts
1.Average orbital speed about 47.4 km/s
2.Year lasts 88 Earth days
3.Fastest orbiting planet
YouTube Angle
Suggested video title for this topic:
"The Solar System’s speed champion around the Sun!"
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