About the observation and description of the nature of the stars and sky objects. Study of the origin, the evolution of the chemical and physical properties of various objects, including a natural phenomenon that can be observed in the sky.
To observe and describe nature. Of stars and celestial objects Study the origin, evolution, physical and chemical properties of various objects, including a natural phenomenon that can be observed in the sky.
On observation and explain the nature of the stars and celestial body, study the origin, evolution, physical and chemical properties of the objects. , as well as a natural phenomenon that can observe in the sky.