![]() ![]() "It would have to be based on the central meridian of the Moon, which I think is zero latitude, which is the latitude that corresponds to the vertical line that appears when the Moon is in the waning or waxing phase," explained the astronomer. The ESA is proposing an international agreement on a reference frame "similar to the role played on Earth by the International Terrestrial Reference Frame, which allows the consistent measurement of precise distances between points all over our planet."ĭiego agrees that a type of measurement, similar to that of the Earth's meridians or time zones, should be followed. ![]() This is because they run slower in stronger gravitational fields, such as the Earth's. ![]() According to the ESA, clocks tick faster on the Moon: they gain about 56 microseconds or millionths of a second per day. ![]()
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