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  2. Sidereus Nuncius - Wikipedia

    en.wikipedia.org/wiki/Sidereus_Nuncius

    It was the first published scientific work based on observations made through a telescope, and it contains the results of Galileo's early observations of the imperfect and mountainous Moon, of hundreds of stars not visible to the naked eye in the Milky Way and in certain constellations, and of the Medicean Stars (later Galilean moons) that ...

  3. The Assayer - Wikipedia

    en.wikipedia.org/wiki/The_Assayer

    The Assayer (Italian: Il saggiatore) is a book by Galileo Galilei, published in Rome in October 1623. It is generally considered to be one of the pioneering works of the scientific method, first broaching the idea that the book of nature is to be read with mathematical tools rather than those of scholastic philosophy, as generally held at the time.

  4. Galileo affair - Wikipedia

    en.wikipedia.org/wiki/Galileo_affair

    Galileo was prosecuted for holding as true the doctrine of heliocentrism, the astronomical model in which the Earth and planets revolve around the Sun at the centre of the universe. In 1610, Galileo published his Sidereus Nuncius (Starry Messenger), describing the observations that he had made with his new, much stronger telescope, amongst them ...

  5. Galileo Galilei - Wikipedia

    en.wikipedia.org/wiki/Galileo_Galilei

    Galileo was born in Pisa (then part of the Duchy of Florence) on 15 February 1564, [20] the first of six children of Vincenzo Galilei, a leading lutenist, composer, and music theorist, and Giulia Ammannati, the daughter of a prominent merchant, who had married two years earlier in 1562, when he was 42, and she was 24.

  6. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    Galileo [9] [10] discovered the Galilean moons. These satellites were the first celestial objects that were confirmed to orbit an object other than the Sun or Earth. Galileo saw Io and Europa as a single point of light on 7 January 1610; they were seen as separate bodies the following night. [11] Callisto: Jupiter IV o: 8 January 1610 p: 13 ...

  7. Heliocentrism - Wikipedia

    en.wikipedia.org/wiki/Heliocentrism

    By 1470, the accuracy of observations by the Vienna school of astronomy, of which Peuerbach and Regiomontanus were members, was high enough to make the eventual development of heliocentrism inevitable, and indeed it is possible that Regiomontanus did arrive at an explicit theory of heliocentrism before his death in 1476, some 30 years before ...

  8. Letters on Sunspots - Wikipedia

    en.wikipedia.org/wiki/Letters_on_Sunspots

    The discussion concerned what inferences could be drawn about the universe from their rotation. Galileo did not argue that the existence of sunspots conclusively proved that the Copernican model was correct and the Aristotelian model wrong; he explained how the rotation of sunspots could be explained in both models, but that the Aristotelian ...

  9. Timeline of gravitational physics and relativity - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_gravitational...

    1583 – Galileo Galilei deduces the period relationship of a pendulum from observations (according to later biographer). 1586 – Simon Stevin demonstrates that two objects of different mass accelerate at the same rate when dropped. [2] 1589 – Galileo Galilei describes a hydrostatic balance for measuring specific gravity.