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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.
The Galileo affair (Italian: il processo a Galileo Galilei) began around 1610, [1] and culminated with the trial and condemnation of Galileo Galilei by the Roman Catholic Inquisition in 1633. 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 ...
Galileo observed the Loki volcano (largest in the Solar System) and a new eruption in the southern region of the moon. I33 102 (63) 17 January 2002 This was the closest of all the flybys of Io. The moon provided a gravity-assist necessary for Galileo ' s ultimate collision course with Jupiter.
Starting with Galileo's first orbit, the spacecraft's camera, the Solid-State Imager (SSI), began taking one or two images per orbit of Io while the moon was in Jupiter's shadow. This allowed Galileo to monitor high-temperature volcanic activity on Io by observing thermal emission sources across its surface. [68]
Galileo was successfully deployed at 00:15 UTC on October 19. [16] Following the IUS burn, the Galileo spacecraft adopted its configuration for solo flight, and separated from the IUS at 01:06:53 UTC on October 19. [22] The launch was perfect, and Galileo was soon headed towards Venus at over 14,000 km/h (9,000 mph). [23]
In public, Galileo insisted that Guiducci, and not he, was the author of the Discourse on Comets. [13] Despite Galileo's public protestations, there is no doubt whatever that he was the main author of the Discourse on Comets. The manuscript is largely in Galileo's handwriting, and the sections in Guiducci's hand have been revised and corrected ...
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Copernicus accepted existence of the sphere of the fixed stars, and (more ambiguously) that of the Primum Mobile, [6] as too (initially) did Galileo [7] – though he would later challenge its necessity in a heliocentric system. [8] Francis Bacon was as sceptical of the Primum Mobile as he was of the rotation of the earth. [9]