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  2. Letters on Sunspots - Wikipedia

    en.wikipedia.org/wiki/Letters_on_Sunspots

    Letters on Sunspots (Istoria e Dimostrazioni intorno alle Macchie Solari) was a pamphlet written by Galileo Galilei in 1612 and published in Rome by the Accademia dei Lincei in 1613. In it, Galileo outlined his recent observation of dark spots on the face of the Sun. [ 1 ] His claims were significant in undermining the traditional Aristotelian ...

  3. Discourse on Comets - Wikipedia

    en.wikipedia.org/wiki/Discourse_on_Comets

    The Discourse on Comets (Italian: Discorso delle Comete) was a pamphlet published in 1619 with Mario Guiducci as the named author, though in reality it was mostly the work of Galileo Galilei. In it Galileo conjectured that comets were not physical bodies but atmospheric effects like the aurora borealis. [1]: 62

  4. Sunspot drawing - Wikipedia

    en.wikipedia.org/wiki/Sunspot_drawing

    In 1612, Galileo Galilei was writing letters on sunspots to Mark Welser. They were published in 1613. In his telescope, he saw some darker spots on Sun's surface. It seems like he was observing the Sun and drawing sunspots without any filter, which is very hard.

  5. Solar observation - Wikipedia

    en.wikipedia.org/wiki/Solar_observation

    Galileo Galilei almost certainly began telescopic sunspot observations around the same time as Harriot, given he made his first telescope in 1609 on hearing of the Dutch patent of the device, and that he had managed previously to make naked-eye observations of sunspots. He is also reported to have shown sunspots to astronomers in Rome, but we ...

  6. Galileo Galilei - Wikipedia

    en.wikipedia.org/wiki/Galileo_Galilei

    Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei (/ ˌ ɡ æ l ɪ ˈ l eɪ oʊ ˌ ɡ æ l ɪ ˈ l eɪ /, US also / ˌ ɡ æ l ɪ ˈ l iː oʊ-/; Italian: [ɡaliˈlɛːo ɡaliˈlɛːi]) or mononymously as Galileo, was a Florentine astronomer, physicist and engineer, sometimes described as a polymath.

  7. Sunspot - Wikipedia

    en.wikipedia.org/wiki/Sunspot

    Individual sunspots or groups of sunspots may last anywhere from a few days to a few months, but eventually decay. Sunspots expand and contract as they move across the surface of the Sun, with diameters ranging from 16 km (10 mi) [3] to 160,000 km (100,000 mi). [4] Larger sunspots can be visible from Earth without the aid of a telescope. [5]

  8. Eppur si muove (album) - Wikipedia

    en.wikipedia.org/wiki/Eppur_Si_Muove_(album)

    Eppur si muove is the third full-length album by the German symphonic metal band Haggard.It was released on 26 April 2004 by Drakkar Entertainment.. The album is based on the life of the Italian astronomer Galileo Galilei (1564–1642), who, according to legend, muttered the phrase eppur si muove, meaning "And yet it does move", after being forced to recant, in front of the Inquisition, his ...

  9. Letter to Benedetto Castelli - Wikipedia

    en.wikipedia.org/wiki/Letter_to_Benedetto_Castelli

    In his letter to Benedetto Castelli, Galileo argues that using the Bible as evidence against the Copernican system involves three key errors. Firstly, claiming that the Bible shows the Earth to be static and concluding that the Earth therefore does not move is arguing from a false premise; whether the Earth moves or not is a thing which must be demonstrated (or not) through scientific enquiry.