Galileo Galilei (Italian: [ɡaliˈlɛːo ɡaliˈlɛi]; 15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, sometimes described as a polymath. Galileo has been called the “father of observational astronomy”, the “father of modern physics”, the “father of the scientific method”, and the “father of modern science”.

Galileo studied speed and velocity, gravity and free fall, the principle of relativity, inertia, projectile motion and also worked in applied science and technology, describing the properties of pendulums and “hydrostatic balances”, inventing the thermoscope and various military compasses, and using the telescope for scientific observations of celestial objects. His contributions to observational astronomy include the telescopic confirmation of the phases of Venus, the observation of the four largest satellites of Jupiter, the observation of Saturn and the analysis of sunspots.

More info at: Galileo Galilei – Wikipedia

Additional Articles associated with this person's firsts:

• Galileo Invented the Thermometer
• Galileo Observed the Universe with Powerful Telescope
• Adapted Clinical Thermometer Designed by Galileo
• Gravity Experiment Proves Different Masses Fall the Same
• Ancient Greek Philosopher Proposed a Heliocentric Universe
• Santorio Santorio Utilized Medical Measuring Instruments

Name(s):
      Galileo Galilei
Occupation:
      Astronomer, Physicist, Engineer, and sometimes described as a Polymath
Birth:
      February 15, 1564, Pisa, Italy
Death:
      January 8, 1642, Arcetri

Additional Information:

• Galileo Galilei – Wikipedia
  Galileo Galilei was an Italian astronomer, physicist and engineer, sometimes described as a polymath. Galileo has been called the “father of observational …
• Galileo Galilei – HISTORY
  Considered the father of modern science, Galileo Galilei (1564-1642) made major contributions to the fields of physics, astronomy, cosmology, mathematics and.
• Galileo | Biography, Discoveries, & Facts | Britannica.com
  Galileo, in full Galileo Galilei, (born February 15, 1564, Pisa [Italy]—died January 8, 1642, Arcetri, near Florence), Italian natural philosopher, …
• BBC – History – Galileo Galilei
  Discover facts about the life of Galileo Galilei – the Italian astronomer, from his experiments and inventions to his death.
• Galileo Galilei – StarChild – NASA
  Galileo Galilei was an Italian physicist and astronomer. He was born in Pisa on February 15, 1564. Galileo’s father, Vincenzo Galilei, was a well-known musician …
• Galileo Galilei: Biography, Inventions & Other Facts – Space.com
  Nov 14, 2017 – Italian astronomer Galileo Galilei made a number of inventions and discoveries that remain important to astronomy and science in general …
• Galileo Galilei – Biography, Facts and Pictures – Famous Scientists
  Lived 1564 – 1642. Galileo Galilei – most people simply call him Galileo – was one of the most significant people in the history of science. He lived at a.
• Galileo Galilei – Washington Post
  A Copernican map of the universe published in 1660 features the sun at the center. Galileo’s advocacy of this theory incurred the wrath of Pope Urban VIII.
• Galileo’s Revolutionary Vision Helped Usher In Modern Astronomy …
  Galileo was the first to discover the moons of Jupiter. … “Galileo’s work with the telescope unleashed the notion that ours is a sun-centered solar system and not …
• Discovery of Galileo’s long-lost letter shows he edited his heretical …
  The original letter — long thought lost — in which Galileo Galilei first set down his arguments against the church’s doctrine that the Sun orbits …
• Galileo Galilei (1564-1642) – University of St Andrews
  Galileo Galilei’s parents were Vincenzo Galilei and Guilia Ammannati. Vincenzo, who was born in Florence in 1520, was a teacher of music and a fine lute …
• Galileo Galilei – Crystalinks
  Galileo Galilei. February 15, 1564 – January 8, 1642. Galileo Galilei was a Italian physicist, mathematician, astronomer, and philosopher who played a major role …