For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.

Summary

This quote emphasizes the responsibility of astronomers to meticulously observe and analyze the movements of celestial bodies in order to document their history. It suggests that astronomers have a duty to engage in detailed and knowledgeable investigation of these celestial motions, seeking to understand and chronicle them accurately. This quote implies that astronomers have a crucial role to play in unraveling the mysteries and patterns of the night sky, possibly contributing to humanity's broader understanding of the universe.