-
127
Ptolemy's First Observation
Ptolemy made his first star observation. This encouraged him to start career as an astronomer.
-A.C. -
127
Devolpment of Geometric Evidence
This geometric evidence was explaining how Ptolemy thought the universe worked. More specificly the sun, moon and stars.
-A.C. -
127
Completion of World Map
Ptolemy finished his first world map. It wasn't what we know as mordern day world but was on a curved globe. Later in 1492 Christopher Columbus used this map on his expedition.
-A.C. -
137
Started Star Catalog/Almagest
The Almagest is a book of astronmy and Ptolemy's observation of the universe. This book helped people learn about our universe or at least about what we thought it as like at the time.
-A.C. -
Jul 5, 1491
Krakow University
In 1491-1495 copernicus attended Krakow University for a degree in astronomy and geography.
-JWH -
Oct 6, 1502
Copernicus books
Over his life he wrote a total of three book. The first was "de revelutionibus orbium coelestium".The second was "on the revelutions".The last one was "on the revelutions of heavenly spheres
JWH -
Sep 28, 1514
The heliocentric theory
In 1514 copernicus created the heliocentric theory that states everything in the universe revolves around the sun.
JWH -
Jan 22, 1572
Tycho Brahe's Work
He worked to combine the Geometrical benefits of the benefits of the Copernican system with the benefits of the Ptolemaic system.
-BB -
Nov 11, 1572
Supernova
Tycho Brahe discovers the star named SN. He observed that the star is a fixed star. He also observed that the star was farther than all the planets in the atmosphere.
-BB -
Dec 15, 1573
Lunar Eclipse
Tycho Brahe predicted a lunar eclipse on December 15th, 1573. He observed and found the perigee of the sun. Which is when the moon, earth, and sun are all in line.
-BB -
Aug 23, 1576
Uraniborg
Tycho built an observatory called Urraniborg in Huen. He used it for his work and discoveries. He also used it to help Johannes Kepler with his Kepler's Law of Planetary Motion.
-BB -
Theory of Motion
Galieo works on the theory of motion and discovers many things about velocity, mass, motion, and speed. One example is he dropped a big and a small ball (motion).
-KJ -
Pump
He invints a pump driven by horses, and a year later he recived a patent from the Ventain Senate about his new invention.(A patent is a legal instrument that is published by a monarch or president).
-KJ -
Kepler as a teacher
Kepler left Tubingen and went to Graz. There he became an astronomy and math teacher.
-L.B. -
Acceleration
He dicovers a new theory wich is named "theory of uniform Acceleration wich in Grms that all bodies regardless of weight fall at an equal rate.
KJ -
Johannes Kepler and his laws
Kepler invent's three laws of planetary motion.
1. the orbit of every planet is an ellipse with the sun at one of two foci. 2. a line joining a planet and the sun sweeps out equal areas during equal intervals of timen 3. The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of it's orbit
-LB -
Johannes Kepler invents the Keplerian Telescope
Johannes kepler improved a version of Galileo's version of the refracting telescope. He called it the Keplerian telescope.
-L.B. -
Reflecting Telescope
Isaac Newton invents the reflecting telescope.
-WC -
publication of principea
The publication of the complete principea.
-WC -
knighted by Queen Ann
Isaac Newton is knighted by Queen Ann for his accomplished.
-WC
