Rotation and Revolution of Earth and Moon
Earth revolves in orbit around the sun in 365 days, 6 hours, 9 minutes with reference to the stars, at a speed ranging from 29.29 to 30.29 km/s. The 6 hours, 9 minutes adds up to about an extra day every fourth year, which is designated a leap year, with the extra day added as February 29th.
The mutual force of attraction (gravitational force) between the earth and the sun keeps the earth orbiting around the sun. Similarly,
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