How far away is the Moon? - FamousWhy
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How far away is the Moon?

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How far away is the Moon? The distance of the Moon away from the Earth was settled once and for all after the Apollo astronauts left a small reflector on the Moon's surface.

Lasers were directed at this reflector, and the time taken for the laser light to reach the Moon and be reflected back again was measured.
As light has a constant speed this enabled the exact distance of the Moon from the Earth to be calculated.

This distance is 384,000 km, though it varies slightly because the Moon does not have a perfectly circular orbit.

Tags: moon, earth

Category: Astrology  - ( Astrology Archive)

Date Added: 09 December '11

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