In which major work did Galileo systematically record his revolutionary astronomical observations starting in 1610?

Answer

*Sidereus Nuncius*

Galileo documented his detailed celestial observations, including the nature of the Moon and the moons of Jupiter, in his work *Sidereus Nuncius*, published in 1610.

In which major work did Galileo systematically record his revolutionary astronomical observations starting in 1610?
Galileotelescopeinstrumentobservationsky