Author Topic: Distance to moon has increased 1.5" pa  (Read 680 times)

samdavo

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Distance to moon has increased 1.5" pa
« on: April 30, 2015, 04:08:35 AM »
SUCH ACCURACY !! 1.5 inches in 42K km ! Laser Ranging Experiment ... myth busters :-   
 https://www.youtube.com/watch?v=VmVxSFnjYCA  ...
Wiki :- "range of 42,592 km (26,465 mi).
Millimeter-precision measurements of the lunar distance are made by measuring the time taken for light to travel between LIDAR stations on the Earth and retroreflectors placed on the Moon. Lunar laser ranging measurement data is available from the Paris Observatory Lunar Analysis Center,[2] and the active stations.
The Moon is spiraling away from the Earth at an average rate of 3.8 cm (1.5 in) per year, as detected by the Lunar Laser Ranging Experiment"