Transcript Famous astronomers - sydney-13

Famous astronomers
By Sam , Troy and Alexa Jean
Tyhco Brahe
• Tycho was a Danish astronomer he became
famous for creating precise astronomical
measurements of the solar system about 700
hundred stars.
Tyhco Brahe
• During his free time he studied stars, one
of his great discoveries was he found a
supernova near the Cassiopeia
constellation in 1972.
Galileo Galilei
• Galileo (1564-1962) was an Italian physicist and
astronomer he is greatly remembered for some
of his very important contributions to astronomy
and physics. Galileo got a degree in
mathematics and taught theories that
contradicted Aristotle theories.
Galileo Galilei
• In 1609 he heard that in Holland a spy
glass had been invented, and he was
inspired to create the first telescope . He
also discovered sunspots.
Johannes Kepler
Johannes (1571-1630) was a German
natural philosopher and astronomer who
was known for his ability in formulating
and verifying the three laws of planetary
motion. They are known as the Keplers’s
laws. He studied theology and classics at
the university of Tubingen
Johannes Kepler
Johannes became Tycho Brahe’s assistant
at the observatory near Prague. When
Tycho passed away, Kelper took over his
job and spent the rest of his like writing
books.
Clyde Tombaugh
Clyde (91906-1997) is in the astronomers hall of fame. He
was the final discoverer of Pluto after he spent may of
years researching it. When Clyde was 22 he had made a
home made 9 inch reflector which he used to make
drawing of Saturn and Jupiter. When he sent in the
pictures to Lowell Observatory he was immediately
offered a position as a astronomical photographer.
Clyde Tombaugh
Later, his research gained him another
position as researcher, and his goal was to
find the infamous Planet X, which would
later be Pluto. Finally, on March 12, 1930,
Pluto was discovered.
Nicholas Copernicus
Nicholas (1473-1543) was a polish astronomer, he was well
known for his Copernican theory. His theory started that
the sun rest near the centre of the earth, which spin daily
on its axis revolved around the sun. The process is now
known as the heliocentric or suncentered system.
Nicholas Copernicus
During the Janurary of 1497 he began to study canon law
at University of Bologna while living with a
mathematician, Domenico Maria de Novara. Novara
sparked Copernicus' interest in geography and
astronomy, and the final climax of it came when the two
watched the occultation(eclipse by the moon) of the star
Aldebaran on March 9, 1497.
Edmund Halley
•
During his life he also wrote another important treatise called
Astronomiae Cometicae Synopsis. It was started in 1682 and
published in 1705.
In this he mathematically demonstrated that comets move in a elliptic
orbits around the sun and how over time they would pass the same
point. He had such an accurate prediction that when the comet
(now Halley's Comet) returned in 1758, it validated his theory.
Edmund Halley
Edmund (1656-1742) was a British Astronomer, who was
the first to calculate a comet's orbit. He went to the
University of Oxford, where he studied the theories of Sir
Isaac Newton. Because he was so interested with the
theories, it inspired him to write the Principle which he
published with his own money in 1687.
Maria Mitchell
• Maria (1818-1889) is one of the first famous female
astronomers.
• She was born in Nantucket, Massachusetts. Her love for
astronomy began when her father began maintaining a
small observatory. The accomplishment that brought her
international reorganization was when she discovered a
telescopic comet in October of 1847.
Claudius Ptolemy
• Claudius (AD 100?-170?) was one of the most
famous astronomers and mathematicians, even
though some of his theories were later proved
wrong. Yet he laid down the foundation for
future astronomers and mathematicians to
take. His theories dominated the scientific field
until the 16th century.
Claudius Ptolemy
His name "Claudius" means 'roman citizenship', but
Ptolemaeus means 'resident of Egypt', which would
make sense since most of his life was spent in Egypt,
specifically Alexandria. Claudius’s most famous
work, Almagest, contained geometric theory which
mathematically explained the motions and positions of
planets, sun, and the moon against stars that did not
move.