By studying stars, planets, moons, black holes, nebulae, asteroids, comets, and everything else in space.
The proper name for the study of stars is astronomy. A person who studies stars is an astronomer.
Astronomy
Gerontology. Astronomy is the study of celestial objects such as planets and stars, as well as the Universe as a whole.
They study and admire Astronomy and mathematics
Astronomy is the study of heavenly bodies.
The branch of astronomy that focuses on the study of planets.
Astronomers study astronomy.
AstronomyThat is called "Astronomy".Astronomy
Anything outside the Earth is astronomy.
astronomy, astrophysics
I believe that at the time of Galileo and other pioneers in astronomy there was no formal astronomy study; he (and others) must have learned most of what they knew by themselves.
astronomy