What was the title of Galileo's short Latin treatise published in the spring of 1610?

Answer

Sidereus Nuncius

Galileo published his revolutionary findings, detailing observations of the Moon, Milky Way stars, and Jupiter's moons, in a short Latin treatise titled *Sidereus Nuncius* in the spring of 1610.

What was the title of Galileo's short Latin treatise published in the spring of 1610?
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