The speed of 18.5 miles per second (30 km/sec) corresponds to the Earth's orbit around the Sun. In more detail, the Earth travels at an average orbital speed of about 18.5 miles per second as it makes one complete orbit around the Sun approximately every 365.25 days.
What is the Earth's movement that corresponds to a speed of 18.5 miles per second (30 km/sec)?
Earth moves with the Milky Way Galaxy through galactic space
Earth rotates once every 24 hours
Earth orbits the Sun
Earth orbits, with solar system, in the Milky Way Galaxy
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