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  2. 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, [15] 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.

  3. Exploration of Io - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_Io

    Galileo Galilei, the discoverer of Io. The first recorded observation of Io was made by Tuscan astronomer Galileo Galilei on January 7, 1610 using a 20x-power, refracting telescope at the University of Padua in the Republic of Venice.

  4. Galileo's Leaning Tower of Pisa experiment - Wikipedia

    en.wikipedia.org/wiki/Galileo's_Leaning_Tower_of...

    Comparison of the antiquated view and the outcome of the experiment (size of the spheres represent their masses, not their volumes) Between 1589 and 1592, [1] the Italian scientist Galileo Galilei (then professor of mathematics at the University of Pisa) is said to have dropped "unequal weights of the same material" from the Leaning Tower of Pisa to demonstrate that their time of descent was ...

  5. New observations of the most volcanic world in our solar ...

    www.aol.com/news/observations-most-volcanic...

    Italian astronomer Galileo Galilei, known as the father of modern astronomy, discovered Io on January 8, 1610. ... such as NASA’s Galileo spacecraft, as well as ground-based telescopes ...

  6. Timeline of fundamental physics discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_fundamental...

    1610 – Galileo Galilei: discovered the Galilean moons of Jupiter; 1613 – Galileo Galilei: Inertia; 1621 – Willebrord Snellius: Snell's law; 1632 – Galileo Galilei: The Galilean principle (the laws of motion are the same in all inertial frames) 1660 – Blaise Pascal: Pascal's law; 1660 – Robert Hooke: Hooke's law; 1662 – Robert ...

  7. Galilean moons - Wikipedia

    en.wikipedia.org/wiki/Galilean_moons

    The Galilean moons are named after Galileo Galilei, who observed them in either December 1609 or January 1610, and recognized them as satellites of Jupiter in March 1610; [2] they remained the only known moons of Jupiter until the discovery of the fifth largest moon of Jupiter Amalthea in 1892. [3]

  8. Europa (moon) - Wikipedia

    en.wikipedia.org/wiki/Europa_(moon)

    Europa was discovered independently by Simon Marius and Galileo Galilei [2] and was named (by Marius) after Europa, the Phoenician mother of King Minos of Crete and lover of Zeus (the Greek equivalent of the Roman god Jupiter). Slightly smaller than Earth's Moon, Europa is made of silicate rock and has a water-ice crust [16] and probably an ...

  9. Letters on Sunspots - Wikipedia

    en.wikipedia.org/wiki/Letters_on_Sunspots

    In 1610, using his telescope, Galileo had discovered in that Venus, like the Moon, had a full set of phases, [44] but only in Letters on Sunspots did he commit this finding to publication. The fact that there was a full phase of Venus, (similar to a full moon) when Venus was in the same direction in the sky as the Sun meant that at a certain ...