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Using speed measurements of the gas at different distances from the Galactic center, the Sun appears to be cruising along at 200 kilometers per second and it takes 240 million years to complete the grand circuit around the Galaxy. This speed is an absolute speed.
We are approximately 93 million miles (150 million km) from the Sun, and at that distance, it takes us one year (365 days) to go around once. The full path of the Earth's orbit is close to 600 million miles (970 million km).To go around this immense circle in one year takes a speed of 66,000 miles per hour (107,000 km/hr) . At this speed, you could get from San Francisco to Washington DC in 3 minutes.As they say on TV, please don't try going this fast without serious adult supervision.By the way, as fast as this speed is, it is still a long way from the speed limit of the universeâthe speed of light. Light travels at the unimaginably fast pace of 670 million miles per hour or 1.09 billion km/hr.).