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322 BCE
Aristotle
Aristotle lived from 384 to 322 bc. Aristotle died from a stomach illness. Aristotle's lectures were collected into nearly 150 volumes and represented in the encyclopedia of the knowledge to this day, much of it contributed. Unfortunately, less than a third of his writings have survived. although a third of his writings survived Aristotle's most important work was on biology, he also dealt with other subjects like logic, metaphysics, psychology, politics, poetry, drama, and ethics. -
168 BCE
Ptolemy
Ptolemy, was born in 100 CE and died in 170 Ce, an Egyptian was an Astronomer, mathematician, and geographer of Greek descent who flourished in Alexandria during the 2nd century Ce. In several fields his writings represent the culminating achievement of Greece-Roman science, particularly his geocentric (Earth Was the center) model of the universe now known as the Ptolemaic system. -
1543
Copernicus
Born on Feb. 19, 1473, in Warmia, Poland, Mikolaj Kopernik traveled to Italy at the age of 18 to attend college, where he was supposed to study the laws and regulations of the Catholic Church and return home to become a canon. However, he spent most of his time studying mathematics and astronomy. While attending the University of Bologna, he lived and worked with astronomy professor doing research and helping him make observations of the heavens. -
Tycho Brahe
Tycho Brahe was born in Denmark in 1546.Tycho Brahe benefited greatly from a danish king and received an island. He built an observatory on the island. For over 20 years, Brahe used the island to make astronomical observations. Tycho Brahe soon lost the Danish king's support, so he went to Wandsbek in what is today known as Germany. He settled in Prag where he continued his astronomical observations. Brahe died in 1601. His last words, “May I not seemed to have lived in vain”. -
Hans lippershey
He was hired as a master lens grinder but one day he was messing around with lenses and lined them up and saw that they magnified far away objects. His earliest design was two lenses held in place simply so the viewer could look through it without the lenses moving and he called it "looker". This led directly to the development to the spyglass and other magnifying devises. -
Johannes Kepler
Johannes was a German astronomer that discovered the three major laws of planetary motion. (1) the planets move in elliptical orbits with the Sun at one focus; (2) the time necessary to traverse any arc of a planetary orbit is proportional to the area of the sector between the central body and that arc (the “area law”); and (3) there is an exact relationship between the squares of the planets’ periodic times and the cubes of the radii of their orbits (the “harmonic law”). -
Galileo
Galileo was born February 15 1564 and died January 8 1662. He was an Italian astronomer, mathematician, physicist, philosopher, and professor who made a lasting observation on nature. He used math to prove his theories of the universe and earned the moniker “ The father of modern space science.”. He made a discovery that lenses can make telescopes and on the fall of 1609 he pointed it to the heavens and made tremendous discoveries of the sun, Jupiter and more. -
Giovanni Cassini
Cassini was an astronomer at the Panzano Observatory from 1648 to 1669. He also served as a professor of astronomy at the University of Bologna. -
sir Isaac newton
Isaac newton made the tree laws of motion 1. every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. 2. the velocity of an object changes when it is subjected to an external force. 3. for every action (force) in nature there is an equal and opposite reaction. -
William Herschel
William developed an interest in the techniques of telescope construction, as well as the distant celestial bodies. He built his own telescope and eyepieces that were advanced enough to have a magnifying power of 6,450 times. Herschel conducted two preliminary telescopic surveys of the heavens, and in 1781, during his third survey of the night sky, he discovered an extraordinary object, which was actually the planet Uranus, and its two moons, Titania and Oberon. -
Percival Lowell
Percival was an astronomer, author and mathematician who founded the Lowell Observatory in Flagstaff Arizona. He is best known for fueling speculation that there was life on Mars, a vision that has had enormous impact on the development of Science Fiction. -
Karl Janski
Jansky joined a telephone company and his assignment was to track down and identify the various forms of interference that were plaguing telephone communications and he was able to discover all of them but one. Then he started studying the unidentified source and by spring he figure out that it was coming from the milky way -
Edwin Hubble
As an astronomer Hubble was a late bloomer. Before finding his interest in the stars he had a degree and served in WW 1.However, after practicing law for one year, he decided to “chuck law for astronomy,” knowing that “even if [he] were second rate or third rate, it was astronomy that mattered.”. -
Albert Einstien
Albert was a physicist, Einstein had many discoveries, but he is perhaps best known for his theory of relativity and the equation E=MC2, which foreshadowed the development of atomic power and the atomic bomb. -
Sputnik
The Soviet Union inaugurates the “Space Age” with its launch of Sputnik, the world's first artificial satellite. The spacecraft, named Sputnik after the Russian word for “satellite,” was launched at 10:29. In January 1958, Sputnik's orbit deteriorated, as expected, and the spacecraft burned up in the atmosphere. -
Ejnar Hertzsprung
Ejnar made a diagram called "The Hertzsprung Diagram" has been used ever since as a classification system to explain stellar types and stellar evolution. He also discovered two asteroids, one of which is 1627 Ivar, an Amor asteroid.
