ASTRONOMY TIMELINEMichelle Marin

3000 BC

2500 BC

310 BC230 BC

1546

1601

1564

1642

1727

1630

1571

90 AD168 AD

1608

STONEHENGE

ARISTARCHUS IS BORNARISTARCHUS DIESPTOLEMY IS BORNPTOLEMY DIES

TYCHO BRAHE IS BORNGALILEO GALILEI IS BORNJOHANNES KEPLER IS BORNTYCHO BRAHE DIESTELESCOPE IS INVENTEDJOHANNES KEPLER DIESGALILEO GALILEI DIES, ISAAC NEWTON IS BORN

ISAAC NEWTON DIES

TABLE OF CONTENTS2.... STONEHENGE3.... ARISTARCHUS4.... PTOLEMY5.... TYCHO BRAHE6.... GALILEO GALILEI7.... JOHANNES KEPLER8.... TELESCOPE9.... ISAAC NEWTON

3000 BC 2500 BC

STONEHENGE

THE STONEHENGE, MANY HISTORIANS BELIEVE, WAS BUILT IN 2500 BC. HOW DID IT CONTRIBUTE TO ASTRONOMY?PEOPLE WHO STUDIED THE STONEHENGE BELIEVE THAT IT WAS AN ANCIENT OBSERVATORY. PEOPLE ALSO BELIEVE THAT IT HAS AN ASTROLOGICAL AND A SPIRITUAL MEANING BEHIND IT, TOO. MANY PEOPLE BELIEVE THAT THE STONEHENGE WAS BUILT TO PREDICT LUNAR AND SOLAR ECLIPSES.

BUILT

310 BC 230 BC

ARISTARCHUS

ARISTARCHUS WAS BORN IN 310 BC AND DIED IN 230 BCARISTARCHUS WAS THE FIRST KNOWN PERSON TO SAYABOUT THE HELIOCENTRIC MODEL OF THE SOLAR SYSTEM.THE HELIOCENTRIC MODEL OF THE SOLAR SYSTEM STATESTHAT THE SUN IS THE CENTER OF THE SOLAR SYSTEM, NOT THE EARTH. ARISTARCHUS ALSO BELIEVED THAT STARS WERE FAR AWAY,AND AT THAT TIME, THEY BELIEVED THAT THEY WERE AROUND THE ORBIT OF SATURN.

BORN DIED

90 AD 168 AD

PTOLEMY

PTOLEMY BELIEVED THAT EARTH WAS THE CENTER OF THE UNIVERSE. THIS IS THE GEOCENTRIC MODEL OF THE SOLAR SYSTEM. IT IS ALSO CALLED THE PTOLEMAIC MODEL

PLANET

EARTH

BORN DIED

TYCHO BRAHE

1546 1601

TYCHO BRAHE WAS GIVEN AN ISLAND IN 1574 TO SET UP AN OBSERVATORY, WHICH BECAME ONE OF THE BEST OBSERVATORIES IN ALL OF EUROPE. HE BUILT NEW INSTRUMENTS. HE GOT ALL OF HIS MATERIALS AND ITEMS HE OWNED AND LEFT IN 1597. AFTER HIS DEATH IN 1601, HIS INSTRUMENTS WERE PRESERVED AND LATER ON, WERE LOST.

BORN DIED

GALILEO GALILEI

1564 1597 1609 1632 1633 1638 1642

BORN DIED

1597- HE SUPPORTED THAT THE SUN WAS THE CENTER OF THE SOLAR SYSTEM. 1609- HE USED THE TELESCOPE AND IMPROVED IT, FIRST WAS 9 POWER, THEN HE IMPROVED IT TO 30 POWER. HE THOUGHT HE PROVED THAT THE EARTH WAS REVOLVING AROUND THE SUN WITH TIDES, BUT HE WAS WRONG, IT WAS NOT THE REASON. 1632- HIS BOOK GOT PUBLISHED, THE CHURCH ORDERED FOR THE PUBLICATION TO STOP. 1633 HE HAD TO STAND TRIAL FOR HERESY. HE WAS SENTENCED TO LIFE IMPRISONMENT. 1638 HE PUBLISHED ANOTHER BOOK ABOUT MOTION, BUT AT THAT TIME HE WAS ALREADY COMPLETELY BLIND.

JOHANNES KEPLER

JOHANNES KEPLER BELIEVED THAT ALL PLANET ORBITS WERE ELLIPSE AND NOT PERFECTLY CIRCULAR. KEPLER ALSO BELIEVED THAT THE CLOSER A PLANET WAS TO THE SUN, THE FASTER IT WILL REVOLVE, AND THE FURTHER IT IS, THE SLOWER IT WOULD REVOLVE. LASTLY, HE BELIEVED THAT PLANETS FURTHER AWAY WOULD HAVE A SLOWER ROTATION RATE.

1571 1630

BORN DIED

TELESCOPE

1608

INVENTED

THE TELESCOPE WAS INVENTED BY HANS LIPPERHEY. HE WAS BORN IN GERMANY AND HIS HOME WAS IN HOLLAND. THE TELESCOPE HIGHLY AFFECTED ASTRONOMIC WORLD. THIS IS BECAUSE TELESCOPES, SUCH AS THE HUBBLE SPACE TELESCOPE, LET US KNOW ABOUT OTHER PLANETS THAT ARE OUT THERE IN OUR UNIVERSE. EVEN THOUGH THE HUBBLE SPACE TELESCOPE IS A LOT MORE ADVANCED THAN THE TELESCOPE LIPPERHEY INVENTED, LIPPERHEY’S TELESCOPE WAS STILL A START. IT HELPS US SEE OTHER TRAITS OF OTHER PLANETS AND BECAUSE OF THE TELESCOPE, WE CAN EXPAND OUR KNOWLEDGE ABOUT OUTER SPACE. IT HELPS US SEE BEYOND OUR EYES.

ISAAC NEWTON

DIEDBORN

1642 1727

ISAAC NEWTON CONTRIBUTED TO ASTRONOMY WITH THE LAW OF GRAVITY. THIS IS BECAUSE THE LAW OF GRAVITY HELPED PROVE THE HELIOCENTRIC SOLAR SYSTEM WOULD ACTUALLY WORK, BECAUSE EVERYONE ALWAYS WAS THINKING IF THE EARTH WAS MOVING, THEN WHY ISN’T EVERYTHING IN THE EARTH FLYING AROUND? THE LAW OF GRAVITY HELPED PROVE THAT EVEN IF THE EARTH IS MOVING, NOT EVERYTHING HAS TO BE FLYING AROUND. BECAUSE OF ISAAC NEWTON, WE KNOW THAT ALL THE PLANETS IN FACT DO ORBIT THE SUN, NOT THE EARTH.