assuming that the orbit of the moon around earth is circular and that 1 revolution takes 27.3 days, find the linear speed of the moon. The Moonis an average of 238,855 miles (384,400 kilometers) away. The astronomical unit (symbol: au, or AU) is a unit of length, roughly the distance from Earth to the Sun and equal to about 150 million kilometres (93 million miles) or ~8 light minutes. earth-to-moon-distance to miles 1 Earth To Moon Distance = 238856.32903842 Miles [3] Lunar distance is also an important astronomical datum; the precision of this measurement to a few parts in a trillion has implications for testing gravitational theories such as general relativity,[4] and for refining other astronomical values such as Earth mass,[5] Earth radius,[6] and Earth's rotation. During the Apollo missions in 1969, astronauts placed retroreflectors on the surface of the Moon for the purpose of refining the accuracy of this technique. If Earth were the size of a nickel, the Moon would be about as big as a coffee bean. [22], The giant impact hypothesis, a widely accepted theory, states that the Moon was created as a result of a catastrophic impact between Earth and another planet, resulting in a re-accumulation of fragments at an initial distance of 3.8 R⊕ (24,000 km or 15,000 mi). With a radius of about 1,080 miles (1,740 kilometers), the Moon is less than a third of the width of Earth. Justin XoXo :), Earth-to-Moon distance, also known as "Lunar Distance" is the distance between the Earth's and the Moon's surfaces. On average, the distance from Earth to the moon is about 238,855 miles (384,400 km). It may also refer to the time-averaged distance between the centers of the Earth and the Moon, or less commonly, the instantaneous Earth–Moon distance. Modern cameras have now reached a resolution level capable of capturing the Moon with enough precision to perceive and more importantly to measure this tiny variation in apparent size. The distance from the Earth to the Moon is approximately 240,000 miles. The table below lists the distance of each planet from the Sun in AU. Using the four buttons at the top, select either Distance from the Sun, Distance from the Earth, Size in the Sky, or Brightness to control how the planets are displayed. [22] It is also believed that this anomalously high rate of recession may continue to accelerate.[23]. Please support this site by disabling or whitelisting the Adblock for "justintools.com". That depends on the Earth’s position with Mars. [18] The effect of radiation pressure from the Sun contributes an amount of ±3.6 mm to the lunar distance. The instantaneous lunar distance is constantly changing. [16] During this event, participants were invited to record a series of five digital photographs from moonrise until culmination (the point of greatest altitude). Multiple signals were added together to obtain a reliable signal by superimposing oscilloscope traces onto photographic film. From that measurement, the distance could be calculated. As long as people have looked at the moon, they have wondered how far away it is from Earth. In other words, the distance to the Moon is 864,000 divided by 3.5, or around 247,000 miles. This would occur when the duration of the lunar orbital period equals the rotational period of Earth, which is estimated to be 47 of our current days. This means that distance from the Earth to the Moon can vary by 43,592 km. At differe… The diameter of the Earth is also known to be about 12,875 km or 8,000 miles.By tracking the movement of the Earth’s shadow across the Moon, Greek astronomers found that the Earth… Users experience is very important, that's why I use non-intrusive ads. From the measurements, the distance was calculated with an uncertainty of 1.25 km (0.777 mi).[35]. The benefit of this method is that the only measuring equipment needed is a modern digital camera (equipped with an accurate clock, and a GPS receiver). Change 240,000 mi to km: 1.609 * 240000 = 386,160 km [7] The measurement is also useful in characterizing the lunar radius, the mass of the Sun and the distance to the Sun. Measuring tape*If Earth was the size of a basketball, the moon would be the size of a tennis ball. Radar pulses lasting 5 μs were transmitted with a peak power of 2 megawatts, at a repetition rate of 260 pulses per second. An amount of ±3.6 mm to the Moon is farther away from the Earth to is. 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