ないわくせい
内惑星
1. inner planet
2. Inferior and superior planetsThe terms "inferior planet" and "superior planet" were originally used in the geocentric cosmology of Claudius Ptolemy to differentiate as 'inferior' those planets whose epicycle remained collinear with the Earth and Sun, compared to the 'superior' planets that did not. In the 16th century, the terms were modified by Copernicus, who rejected Ptolemy's geocentric model, to distinguish a planet's orbit's size in relation to the Earth's.
Read “Inferior and superior planets” on English Wikipedia
Read “内惑星” on Japanese Wikipedia
Read “Inferior and superior planets” on DBpedia
Read “Inferior and superior planets” on English Wikipedia
Read “内惑星” on Japanese Wikipedia
Read “Inferior and superior planets” on DBpedia
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