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The United States has landed on the moon six times so far, and a total of 12 people have landed on the moon. They are:
1. Apollo 11.
United States, 1969 7 20, manned moon landing, the first astronaut landing on the moon.
2. Apollo 12, USA, 1969 11 19, manned moon landing, the first precise fixed-point landing.
3. Apollo 14, USA, 1971 2 5, manned lunar landing, carrying a "lunar rickshaw" for sampling.
4. Apollo 15, United States, 1971 7 30, manned lunar landing, carrying the first manned lunar vehicle.
5. Apollo 16, USA, 1972 4 21, manned landing on the moon, exploring the Central Plateau.
6. Apollo 17, USA, 1972 12 11, manned moon landing, the longest stay on the moon (75 hours).
The 12 personnel are:
Apollo 11 in July 1969: Neil Armstrong.
Buzz Aldrin.
Apollo 12 in November 1969: Pete Conrad, Alan Bean.
Apollo 14 in February 1971: Alan Shepard, Edgar Mitchell.
Apollo 15 in July 1971: David Scott, James Erwin.
Apollo 16 in April 1972: John Young, Charles Duke.
Apollo 17 in December 1972: Eugene Cernan, Harrison Schmidt.
All 12 are Americans, and all have only flown one mission to the moon.
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The United States has carried out a total of **6** manned missions to the moon, and a total of **12 people** have landed on the moon.
Important moon landings were: Apollo 11, Apollo 12, Apollo 14, Apollo 15, Apollo 16, Apollo 17.
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The distance between the earth and the moon is 384,000 kilometers, when humans first landed on the moon, it took 75 hours and 50 minutes to fly from the earth to the moon, and Chang'e-1 flew for 13 days and 18 hours, because the rocket did not go straight to the moon, but had to fly around the earth first, adjust the orbit parameters, and then fly to the moon.
The distance between the Moon and the Earth's perigee is 10,000 kilometers, and the distance from the Earth's apogee is 10,000 kilometers. The Moon is the closest planet to the Earth, usually the Moon is about 400,000 kilometers away from the Earth, because the Moon orbits the Earth is an elliptical orbit dominated by an axis, therefore, the Moon is 50,000 kilometers more than the closest to the Earth.
Earth-Moon distance. On July 30, 1969, the Earth's state of California to the lunar surface lunar longitude of the moon; Lunar Latitude:
The distance of this place is: meters. Thanks to laser technology and mirrors on the surface of the moon, the accuracy of human measurement of the distance from the Earth to the Moon has suddenly increased to 15 centimeters.
On August 30, 1969, after a lapse of one month, humans measured it again and got the value: meters. As a result, mankind discovered that the orbit of the moon around the earth is not an exact circle, but an ellipse that is sometimes close to the earth and sometimes far from the earth.
On December 30, 1969, the Earth's distance from the Moon: meters. After many and continuous measurements, the same data commonly used in today's textbooks has been obtained: the average distance from the Earth to the Moon is about 10,000 kilometers.
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Generally, it takes about 9-12 months for a Mars rover to fly to Mars. Here are some specific examples that you can refer to.
On April 7, 2001, the United States launched the "Odyssey" Mars probe, and on October 24, 2001, the probe entered the Mars orbit.
On 2 June 2003, the European Space Agency's Mars Express probe was launched and arrived on Mars in December 2003.
On June 10, 2003, the U.S. Mars Rover was launched with the Spirit rover and landed on January 4, 2004 at Gusev Crater in the southern hemisphere of Mars.
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The distance between the Earth and the Moon is 384,000 km.
Divide the speed of the spacecraft to get the time it takes to get from the Earth to the Moon, and it takes about seconds for a laser beam from the Earth to reach the Moon.
Scientists envision a future flying saucer that takes about five and a half hours to fly from the Earth to the Moon When humans first landed on the Moon, it took 75 hours and 50 minutes to fly from the Earth to the Moon.
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I Ching.
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