How Fast Does the Earth Travel Around the Sun?

Answer – When the earth revolves around the sun, it travels at a speed of 107,226 kilometers per hour. This equals 30 kilometers per second or 66,628 miles per hour.

Explanation:

The earth circles the sun in an almost-circular orbit with a radius of 149,597,870 km.

The radius can further be used to find the circumference of the earth’s orbit, given by $2 π r$ .

$\Rightarrow 2 \times π \times 149, 597, 870 = 939, 951, 138.769 k m$

The time it takes to complete one revolution is 1 year, or 365.25 days.

$\Rightarrow 365.25 \times 24 h r = 8766 h r$

$S p e e d = \frac{D i s \tan c e}{T i m e}$

Therefore, the speed of the earth as it moves around the sun = $\frac{939, 951, 138.769 k m}{8766 h r} = 107, 226 k m / h r$ .

This approximately equals 30 km/s or 66,628 mi/hr.

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