1 AU (Astronomical Unit). 1 AU is defined as the mean distance between the earth and the sun, however this doesn't make it a 100% always right answer, as the earth's orbit is ellipsical so varies in radius. Joking answers aside though, the ellipsical nature of the earth's orbit means there is no 1 right answer, though even if it was perfectly circular there would still be conflicting answers due to measuring errors.

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TopNewest1 AU (Astronomical Unit). 1 AU is defined as the mean distance between the earth and the sun, however this doesn't make it a 100% always right answer, as the earth's orbit is ellipsical so varies in radius. Joking answers aside though, the ellipsical nature of the earth's orbit means there is no 1 right answer, though even if it was perfectly circular there would still be conflicting answers due to measuring errors.

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8.21 light minutes As the light from the sun takes 8.21 minutes to reach the surface of earth

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shoot a laser from earth to the sun and try measuring the end point of the laser i.e on the sun :D

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Large

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It is the length of the line joining the centers of the Earth and the Sun... :D

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