Galileo Galilei was an Italian astronomer, physicist and engineer who made many important scientific discoveries. Through experiments, he determined that all objects fall at the same rate regardless of their mass, contradicting Aristotle. He significantly improved the telescope and was the first to observe craters on the moon, sunspots, and Jupiter's moons. Galileo supported the Copernican view that the Earth and planets revolve around the sun, in conflict with the Catholic Church, and was eventually placed under house arrest for the last years of his life.

1. “In questions of science the authority of a thousand is not
worth the humble reasoning of a single individual.”

3.  Was born at Pisa, Italy on
February 15, 1564
 Galileo was named after an
ancestor, Galileo Bonaiut
 At 11, he was sent off
to study in a Jesuit Monastery
In 1581, at the age of 17, he gave
into his father’s wishes and
entered the University of Pisa and
took medicine just as what his
father wanted him to do

4.  In 1585, he gave up his courses in Medicine without
completing his degree and pursued to become a
Mathematics Teacher. Then, he began teaching Math
privately in Florence

5. Galileo’s Parents
Vincenzo Galilei
Giulia Ammannati

6.  The Ancient Greek scientist, Aristotle,
taught that heavier objects fall faster than
lighter ones, a belief still held in Galileo's
lifetime. But Galileo wasn't convinced.
Experimenting with balls of different sizes
and weights, he rolled them down ramps
with various inclinations. His experiments
revealed that all of the balls boasted the
same acceleration independent of their
mass.

7.  Galileo is incorrectly credited with the creation of a
telescope. Instead, he significantly improved upon
them.
 In 1609, he first learned of the existence of the
spyglass, which excited him. He began to experiment
with telescope-making. His telescope allowed him to
see with a magnification of eight or nine times. In
comparison, spyglasses of the day only provided a
magnification of three.

9. He was the first to see craters on the moon, discover
sunspots, and track the phases of Venus
 And recent research seems to imply he discovered
Neptune two centuries before it was officially known.

10.  Of all of his telescope discoveries, he is perhaps most
known for his discovery of the four most massive
moons of Jupiter (Io, Ganymede, Europa, Callisto),
now called the Galilean moons.

11.  In Galileo's lifetime, all celestial bodies were thought to
orbit the Earth.
 Galileo, however, did not agree. His research — including
his observations of the phases of Venus and the fact that
Jupiter boasted moons that didn't orbit Earth — supported
the Copernican system, which (correctly) stated that the
Earth and other planets circle the sun.
 He was warned not to teach or write about this
controversial theory. But in 1632, believing that he could
write on the subject if he treated it as a mathematical
proposition, he published work on the Copernican system.
He was found guilty of heresy, and was placed under house
arrest for the remaining nine years of his life.

19.  Leonardo di ser Piero da Vinci ( 15 April 1452 – 2
May 1519) was a painter, sculptor, architect, musician,
mathematician, engineer, inventor, anatomist,
geologist, cartographer,botanist and writer.

20.  Leonardo was, and is, renowned primarily as a painter.
Among his works, the Mona Lisa is the most famous
and most parodied portrait and The Last Supper the
most reproduced religious painting of all time, with
their fame approached only by Michelangelo's The
Creation of Adam . Leonardo's drawing of
the Vitruvian Man is also regarded as a cultural
icon, being reproduced on items as varied as the euro
coin, textbooks, and T-shirts.

22.  The Last Supper is fresco painting .Fresco painting
is the type of painting that is painted in Thanjavur
brahadeeshwara temple .

24.  TheMona Lisa is a half-length portrait of a woman
by Leonardo da Vinci, which has been acclaimed as "the
best known, the most visited, the most written about, the
most sung about, the most parodied work of art in the
world."
 The painting, thought to be a portrait of Lisa Gherardini,
the wife of Francesco del Giocondo, is in oil on a
white Lombardy poplar panel, and is believed to have
been painted between 1503 and 1506, although Leonardo
may have continued working on it as late as 1517. It was
acquired by King Francis I of France and is now the
property of theFrench Republic, on permanent display
at The Louvre museum in Paris since 1797

26.  The VitruvianMan is a drawing by Leonardo da
Vinci around 1490. It is accompanied by notes based
on the work of the architect Vitruvius. The drawing,
which is in pen and ink on paper, depicts a man in two
superimposed positions with his arms and legs apart
and inscribed in a circle and square. It is kept in the
Gabinetto dei disegni e stampe of the Gallerie
dell'Accademia, in Venice, Italy, under reference 228.
Like most works on paper, it is displayed to the public
only occasionally