Q: Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.
Aristarchus calculated that the Sun is about nineteen times farther than the Moon; it is actually about 390 times farther than the Moon. Another ancient Greek astronomer, Eratosthenes (276-194 BC), estimated the distance between Earth and Sun to be either 4,080,000 stadia or 804,000,000 stadia. Then 4,080,000 stades is less than 1% of the actual Earth-Sun distance, no matter which definition of a stade one chooses. However, 804,000,000 stadia is between 126 million and 168 million kilometers - a range which includes the actual Earth-Sun distance of (approximately) 150 million kilometers. Earth and the Moon. Background As long as people have looked at the Moon, they have wondered how far away it is from Earth. The average distance to the Moon is 382,500 km. The distance varies because the Moon travels around Earth in an elliptical orbit. At perigee, the point at which the Moon is closest to Earth, the distance is approximately 360,000 km. At apogee, the point at which the Moon is farthest from Earth, the distance is approxi-mately 405,000 km. Distance from Earth to the Moon for a given date can be obtained by asking a local The orbit of the moon around the Earth is not a perfect circle so the distance varies a little. The average distance is around 384,400 kilometers or 230,600 miles. When NASA's Apollo astronauts flew to the moon in the late 1960s and early 1970s, it took them three days to reach the moon and enter orbit after launch. Did you know that the moon is moving away from Earth? It moves away at about 3.8 centimeters per year. SpaceKids on SPACE.com provides simple, straightforward answers to really big cosmic questions. 8 Responses. > 1  the Moon takes an elliptical path around the Earth. The planets make nearly elliptical orbits around the Sun, close enough for reasonable approximations, but the Moon’s Orbit around the Earth is sufficiently influenced by the Sun that it follows a path detectably different from an ellipse. The “Moon ABCs Fact Sheet” lists the Earth's diameter as 12,756 km and the Moon's. diameter as 3,476 km. Therefore, the Moon's diameter is 27.25% of Earth's diameter. An official basketball has a diameter of 24 cm. This can serve as a model for Earth. tennis ball has a diameter of 6.9 cm which is close to 27.25% of the basketball. Distance to the Moon 25 Teacher Page Exploring the Moon -- A Teacher's Guide with Activities, NASA EG-1997-10-116-HQ Purpose To calculate the distance between scale models of Earth and the Moon. Background As long as people have looked at the Moon, they have wondered how far away it is from Earth. The average distance to the Moon is 382,500 km. The distance varies. because the Moon travels around Earth in an elliptical orbit. At perigee, the point at. which the Moon is closest to Earth, the distance is approximately 360,000 km. The full moon rises behind some trees in this photo taken by skywatcher Brad Ervin in Bruswick, Georgia on March 19, 2011, when the moon was closer to Earth than it had been in 18 years. In the former, they found that the Moon was imperfectly blocked by the shadow of the Earth, and that the shadow was roughly 2.5 times the width of the Moon. In the latter, they noted that the Moon was of sufficient size and distance to block out the Sun. Also, since we know the time taken by the Earth to go once around the Sun (P = 1 year), and the distance traveled by the Earth in this process (approximately 2πa, since Earth's orbit is nearly circular), we can calculate the average orbital speed of Earth as v = (2πa)/P. Query: how far is earth from the moon?
A:
The average distance between the Earth and the Moon is 382,500 km.