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In contrast, the Lunar distance (LD or ), or Earth–Moon characteristic distance, is a unit of measure in astronomy. More technically, it is the semi-major axis of the geocentric lunar orbit . The lunar distance is on average approximately 385,000 km (239,000 mi), or 1.28 light-seconds ; this is roughly 30 times Earth's diameter or 9.5 times ...
The distance to the Moon can be measured with millimeter precision. [27] The Moon is spiraling away from Earth at a rate of 3.8 cm/year. [24] [42] This rate has been described as anomalously high. [43] The fluid core of the Moon was detected from the effects of core/mantle boundary dissipation. [44]
Earth and the Moon orbit about their barycentre (common centre of mass), which lies about 4,670 km (2,900 miles) from Earth's centre (about 73% of its radius), forming a satellite system called the Earth–Moon system. On average, the distance to the Moon is about 384,400 km (238,900 mi) from Earth's centre, which corresponds to about 60 Earth ...
The moon itself is fewer than 240,000 miles from Earth and there are often asteroids passing Earth within that distance, she said. "Space is big, and so that's very far away," Fast said.
October 16 and 17 brings the full Hunter's Moon, and it's going to be a good one. ... October’s full Hunter’s Moon will swing by Earth at a distance of only 357,364km ... according to NASA, ...
The Moon is Earth's only natural satellite.It orbits around Earth at an average distance of 384,400 km (238,900 mi), about 30 times the width of Earth. The Moon faces Earth always with the same side, because tidal forces between Earth and the Moon have synchronized the Moon's rotation period with its orbital period (lunar month) at 29.5 Earth days.
Propagation time to the Moon and back ranges from 2.4 to 2.7 seconds, with an average of 2.56 seconds (the average distance from Earth to the Moon is 384,400 km). The Moon is nearly spherical, and its radius corresponds to about 5.8 milliseconds of wave travel time.
Source: NASA Armstrong took the photo with a 70mm lunar surface camera while the two explored a region of the moon known as the "Sea of Tranquility.". At an event promoting his new book, No Dream ...