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Galileo Galilei

11 stories mention Galileo Galilei on DeadlyCurious.

The Footnote June 27, 2026 · Campanile di San Marco, Venice

The Padua Professor Who Demonstrated an Improved Telescope to the Venetian Senate on a Bell Tower in August 1609 and Got His Salary Doubled

Galileo Galilei demonstrated his improved 8x telescope to the Venetian Senate from the bell tower of San Marco on 21 August 1609. The senators looked at distant ships approaching the lagoon, decided that the strategic value was substantial, and doubled Galileo's University of Padua salary to 1,000 florins per year. He was a month away from turning the same instrument on the night sky.

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The Coroner’s Report June 27, 2026 · Campo dei Fiori, Rome

The Dominican Friar Burned at the Stake in Rome on 17 February 1600 for Holding That the Universe Is Infinite and That Other Stars Have Their Own Planets

Giordano Bruno was burned at the stake in the Campo dei Fiori, Rome, on 17 February 1600. The Roman Inquisition's verdict identified eight specific theological errors. Among them were the doctrines of an infinite universe with countless inhabited worlds. He was 52. His statue at the execution site was erected in 1889 by an Italian liberal-republican fund-raising campaign against the modern Vatican.

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The Cabinet June 26, 2026 · Convent of Santa Maria sopra Minerva, Rome

The Roman Inquisition Trial That Forced an Aged Galileo to Recant His Telescopic Astronomy

Galileo Galilei was tried by the Roman Inquisition between February and June 1633 on the charge of vehement suspicion of heresy. He was 68, ill, and threatened with formal torture. He recanted publicly on 22 June 1633 and was sentenced to indefinite house arrest. The Catholic Church formally rehabilitated him in 1992.

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The Cabinet June 24, 2026 · Ducal Observatory, Modena

The Jesuit Sunspot Book That Was Half a Major Astronomical Treatise and Half a Sustained Attack on Galileo

Christoph Scheiner's *Rosa Ursina sive Sol* (1626–1630) ran to about 780 folio pages, contained the most accurate pre-19th-century star catalogue of the Sun's surface, and devoted hundreds of pages to attacking Galileo's claim to have discovered sunspots first. The priority dispute substantially poisoned the European astronomical mainstream for two decades.

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The Cabinet June 24, 2026 · Syon House, Middlesex

The English Mathematician Who Made Galileo's Telescopic Discoveries Months Earlier and Published None of Them

Thomas Harriot observed the Moon through a telescope in July 1609, sunspots in late 1610, and the moons of Jupiter probably in early 1610. Each of these observations was made independently of Galileo, in some cases earlier. Harriot published nothing. He died in 1621 with about 5,000 pages of unpublished astronomical manuscripts.

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The Cabinet June 24, 2026 · Syon Park, London

The English Mathematician Who Saw Sunspots Six Months Before Galileo and Published Nothing

Thomas Harriot observed sunspots in December 1610 — months before Galileo's published priority claim — telescopically observed the Moon weeks before Galileo's *Sidereus Nuncius*, and worked out the law of refraction twenty years before Snell. He published almost none of it. He died in 1621 of nasal cancer leaving over 8,000 pages of unpublished manuscripts.

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The Footnote June 23, 2026 · Herrevad Abbey, Skåne (then Denmark, now Sweden)

The New Star Tycho Brahe Saw From Denmark in 1572

On the evening of 11 November 1572 a bright new star appeared in the constellation Cassiopeia. It was visible for sixteen months. Tycho Brahe — twenty-five at the time — measured it carefully enough to prove it sat above the Moon. The Aristotelian heavens that were supposed to be unchanging had quietly changed.

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