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How Far Away Is the Moon?

Summary

Areas of Science
Difficulty
 
Time Required
Long (2-4 weeks)
Credits
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Abstract

Let's suppose you can take advantage of the Internet and get a 'pen pal' located a 1000 miles away in another city. On the same night, and at EXACTLY the same time 'Universal Time', make a CAREFUL observation of where the Moon is located with respect to the background stars. You should be able to discern a slight (about 1/2 the Moon's diameter) shift in position due to parallax. Then, with a little geometry, you could estimate the distance of the Moon during the full lunar cycle (Odenwald, 1997). For another method of measuring the distance to the Moon, see Why Does the Moon Appear Larger at Some Times?

Bibliography

Odenwald, S., 1997. "Questions and Answers." Ask the Astronomer, Astronomy Cafe website. Retrieved March 6, 2018, from http://www.astronomycafe.net/qadir/q2077.html.
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MLA Style

Science Buddies Staff. "How Far Away Is the Moon?" Science Buddies, 23 Mar. 2018, https://www.sciencebuddies.org/science-fair-projects/project-ideas/Astro_p028/astronomy/how-far-away-is-the-moon. Accessed 23 May 2022.

APA Style

Science Buddies Staff. (2018, March 23). How Far Away Is the Moon? Retrieved from https://www.sciencebuddies.org/science-fair-projects/project-ideas/Astro_p028/astronomy/how-far-away-is-the-moon


Last edit date: 2018-03-23
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