What groundbreaking pamphlet did Galileo publish consolidating his early telescopic findings?

Answer

Sidereus Nuncius in 1610.

Galileo consolidated his discoveries, including the Moon's mountains, into the essential text Sidereus Nuncius, translated as the Starry Messenger, which appeared in 1610.

What groundbreaking pamphlet did Galileo publish consolidating his early telescopic findings?
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