Question

For it is the duty of an astronomer to compose the history of the celestial motions through careful and skillful observation. Then turning to the causes of these motions or hypotheses about them, he must conceive and devise, since he cannot in any way attain to the true causes, such hypotheses as, being assumed, enable the motions to be calculated correctly from the principles of geometry, for the future as well as for the past. The present author has performed both these duties excellently. For these hypotheses need not be true nor even probable; if they provide a calculus consistent with the observations, that alone is sufficient.” —Copernicus, as quoted in The Discoverers According to Copernicus, what is the first duty of the astronomer? a. conceiving c. observation b. devising d. assuming

Answer 1

Observation

Step-by-step explanation:

According to the quote, "It is the duty of an astronomer to compose the history of the celestial motions through careful and skillful observation"

An astronomer must first observe before he can do any other thing.

Answer 2

The astronomer's first job is to observe.

Option - c

Explanation:

Nicolas Copernicus was a Polish astronomer who gave rise to the principle of the Sun remainder in the middle, that the Earth orbits the sun every year once a day, spinning on its horizontal plane.

The flat earth or Sun-centered process is known as this. His discoveries were made with the human eye because the telescope development would not take place for years after his death. The novel on the ‘Civil wars of the divine worlds ' was completed in Copernicus in 1532.