Editing 1515: Basketball Earth

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But before Cueball can finish with this common type of comparison, he is interrupted and must begin all over again. We thus never learn what object he would have compared the Moon with. It seems, likely, however, that he would use another ball for the comparison. And the best ball to use would be a {{w|tennis ball}}. See the same sort of comparison of Earth/Moon with basketball/tennis ball in this illustrative video that asks the question: [http://blogs.discovermagazine.com/badastronomy/2011/02/24/how-far-away-is-the-moon/ How far away is the Moon?]. From this, it is also obvious that the system Cueball shows is not to scale with regard to that distance, which should be 7.37 m! This is not necessarily a mistake of the comic, since Cueball never claims that these two balls are in orbit or that they are even the real ones. He is just (in vain) trying to make a size comparison of the two. (Though perhaps further exposition and demonstration might take place after the size comparison.)
 
But before Cueball can finish with this common type of comparison, he is interrupted and must begin all over again. We thus never learn what object he would have compared the Moon with. It seems, likely, however, that he would use another ball for the comparison. And the best ball to use would be a {{w|tennis ball}}. See the same sort of comparison of Earth/Moon with basketball/tennis ball in this illustrative video that asks the question: [http://blogs.discovermagazine.com/badastronomy/2011/02/24/how-far-away-is-the-moon/ How far away is the Moon?]. From this, it is also obvious that the system Cueball shows is not to scale with regard to that distance, which should be 7.37 m! This is not necessarily a mistake of the comic, since Cueball never claims that these two balls are in orbit or that they are even the real ones. He is just (in vain) trying to make a size comparison of the two. (Though perhaps further exposition and demonstration might take place after the size comparison.)
  
A basketball has an average diameter of 24.6 cm (9.7 inches) vs. a tennis ball, which has an average diameter of 6.7 cm (2.6 inches). The ratio between these two diameters is 0.273, which is the same (to three digits) as the ratio given on the Wikipedia page for the Moon: ''Mean radius 1737.10 km (0.273 Earths)''. If he had used a {{w|Baseball (ball)|baseball}}, which is slightly larger, this would still be good enough for demonstrative purposes, as it would have been with an apple.
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A basketball has an average diameter of 24.6 cm (9.7 inches) vs. a tennis ball, which has an average diameter of 6.7 cm (2.6 inches). The ratio between these two diameters is 0.273, which is the same (to three digits) as the ratio given on the Wikipedia page for the Moon: ''Mean radius 1737.10 km (0.273 Earths)''. If he had used a {{w|Baseball (ball)|baseball}}, which is slightly larger, this would still be good enough for demonstrative purposes, as it would have been with an apple.
  
 
It is common to describe the relationship between very large (and very small) objects by analogy to common objects on a more human scale. Here is a similar example where someone has made a comparison of the sizes of the Solar system based on a [http://www.backwoodshome.com/articles/silveira60.html Sun the size of a basketball]. And here, coming from smaller scales, is an [http://www.infoplease.com/dk/science/encyclopedia/atoms.html#ESCI024ATOMS001 example] that states the following: "Imagine an atom magnified to the size of a football stadium. The nucleus of the atom would be the size of a pea in the centre of the stadium."
 
It is common to describe the relationship between very large (and very small) objects by analogy to common objects on a more human scale. Here is a similar example where someone has made a comparison of the sizes of the Solar system based on a [http://www.backwoodshome.com/articles/silveira60.html Sun the size of a basketball]. And here, coming from smaller scales, is an [http://www.infoplease.com/dk/science/encyclopedia/atoms.html#ESCI024ATOMS001 example] that states the following: "Imagine an atom magnified to the size of a football stadium. The nucleus of the atom would be the size of a pea in the centre of the stadium."

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