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What is the approximated distance that the earth is approaching the sun each day, week, month, year or other method of measurement used scientifically?
Answer 1:

The earth is not approaching the Sun. The earth moves around (orbits) the Sun and moves on a slightly elliptical orbit. The mean distance between Earth and Sun is 1.5x1011 meters or one Astronomical Unit. The speed of the Earth around the Sun on this orbit is about 30 km/second. The Earth is closest to the Sun on Jan 3rd and furthest from the Sun on July 4th, currently. The time of the year of perihelion and aphelion varies as a slowly (geologic time) function of time on.



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