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Earth orbits around the sun at a speed of 67,100 miles per hour (30 kilometers per second).

As well as moving around the Sun, the Sun and Earth are orbiting around the dense center of our galaxy at some 447,000 miles per hour (200 km/s)

Just as the Earth rotates around the Sun and our Sun rotates the galactic center – which from our point of view is located about 2,500 light years away – in an elliptical path. A revolution ends approximately every 225 million years. This is known as a galactic year.

It is predicted that since the Sun and Earth were born, 20 galactic years have passed, which means that we completed 20 successful revolutions orbiting the galactic center.