Human: Can you tell me about the history of astronomy? Assistant: 
Astronomy is the study of celestial objects and phenomena. It includes a wide range of topics such as the formation of stars, galaxies, planets, and moons; the evolution of these bodies over time; and the effects of gravity on their motions. Astronomers use telescopes to observe distant objects in space and analyze the light they emit. In addition, radio telescopes can be used to detect signals from other civilizations or even alien life forms.