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Primary sourceBook1880 (translation of 1610 original)

Sidereus Nuncius (The Sidereal Messenger)

Galileo Galilei · 1880 (translation of 1610 original)

Galileo's 1610 account of his telescopic discoveries, here in an 1880 English translation by Edward Carlos.

This is Galileo's own account of the telescopic discoveries that transformed astronomy.

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About this source

What it is

This is an English translation, published in 1880 by Edward Stafford Carlos, of Galileo's original work announcing his astronomical discoveries made with the telescope. Carlos based his translation on an old printed volume he found while cataloguing books at Christ's Hospital school.

Why it matters

Galileo's telescopic observations, described in this text, changed how people understood the heavens by revealing new details about celestial bodies previously invisible to the naked eye. The translator notes that Galileo's original writing was admired both for its content and its style. This edition made Galileo's own explanation of his discoveries available to English-speaking readers for the first time in his own words.

Look closer

  • Why did it take over 250 years for this work to appear in English?
  • What can you tell about Galileo's writing style from how the translator describes it?
  • What might be lost or changed when a text is translated rather than read in its original language?

This book is part of the curated material that grounds the AI version of Galileo Galilei on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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Title page of the 1610 Latin book Sidereus Nuncius by Galileo Galilei, printed in Venice by Thomas Baglionus. Black text in several type styles, with a central woodcut emblem of a seated figure in an oval frame flanked by cherubs. Handwritten shelfmark appears at the bottom.Book

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Sidereus Nuncius

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Portrait of Galileo Galilei (1624 print)

1624

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Galileo Galilei, line engraving by Ottavio Leoni

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