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 | | Remarkably, both astronomers (trigonometry was considered a branch of astronomy at the time) took the value of pi to be 3 and arrived at their accurate conclusions, nonetheless (O'Connor, J. and Robertson, E. Mathematics aside, Hipparchus made several other contributions to science, many of which relate to astronomy. |
 | | By using the principle of precession (discussed later), Schaefer calculated that the position of the stars, with respect to the Earth, determine that at the time this statue was sculpted, no other significant astronomer was alive other than Hipparchus. |
 | | The catalogue itself, which was written in 129 BCE, was written very close to when the sculpture is estimated to have been made. |
| www.astro.utoronto.ca /~bclarke/AST199M/Hipparchus.htm (1353 words) |
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