They don't have to. Modern astronomers instead plug in computer coordinates to find specific celestial locations. Longtime stargazers who plan to pursue astronomy as a course of study are often surprised at the scientific rigor required for the field. Determining how a star or galaxy forms, for example, requires a firm understanding of gravitational forces and hydrodynamics. But I also like to think of myself as a craftsman.
Astronomy is more hands-on and practical.
It's a state of mind. It also stresses that most professional astronomy positions require a doctoral degree . Once a Ph.D. is attained, an astronomer enters an elite troop. Only 0.003 percent of all the Ph.D.'s granted annually in the United States are for astronomy. Overall, North America boasts fewer than seven thousand professional astronomers.