Galileo Galilei

The Historic and Revolutionary Scientist

Why is Galileo so important?

He showed, and proved, that the Earth was not the center of the universe, but that the sun was. He also discovered three planets of our solar system. He discovered the roughness of the moon's surface, and discovered sun spots on well, the sun.

Early Life

Galileo, was the first of six children from Vincenzo Galilei and Guilia Ammannati, in Pisa, Duchy of Florence, Italy. He had five siblings, but only three survived infancy. When he was eight his family moved to Florence and he stayed behind with Jacopo Borghini. He then started school at Camaldolese Monastery at Vallombrosa, which was only 35 km out of Florence.

Scientific Achievements

Galileo had not only just been the one to prove Earth rotated around the sun, but he also discovered the planet Jupiter, along with Saturn, and Neptune. He found Jupiter because he saw three satellites (moons) orbiting around and saw one disappear and eventually reappear, thus he declared a planet had been found. He had confused Saturn for a three planet system due to it's rings, but later it was found to be one planet. Neptune had disappeared and reappeared making Galileo confused, but allowed for future scientists to discover it. Galileo had also been one of the first the prove there were sun spots.

Proposed Ideas

  • Galileo had proposed a new idea for a telescope, but was shot down by Kepler's telescope design, which is similar to the one we use today.
  • The Galilean moons
  • The roughness of the moons surface
  • The idea of stars invisible to the naked eye, such as those that make up the Milky Way.
  • Difference between looks between planets and stationary stars.

Quotes from Galileo himself!

  • You cannot teach a man anything; you can only help him find it within himself. - You cannot juts tell man the information he needs, but rather he must learn it to understand.
  • All truths are easy to understand once they are discovered; the point is to discover them. - When you finally learn the truth it will be easier to figure the truth out, but you must find the truth first.