Astronomy Timeline

By lehsstudent
  • 276

    Eratosthenes

  • 276

    Eratosthenes

    Eratosthenes
    Born-276 BC
    Died-194 BC -Greek mathematecian, geographer, poet, astronamer, and a music theorist. -He was the founder of scientfic chronolgy. He endeavored to revise the dates of cheif literary and polictical events.
  • 310

    Aristarchus of Samos

    Aristarchus of Samos
    Aristsrchus Of Samos:
    Born- c. 310 BCE
    Died-C. 230 BCE -Believed in Heliocentrism
    -Distance To The Sun
    -The Great Year and Estimate of the length of the month.
  • 510

    Anaxagoras

    Anaxagoras
    Anaxagoras- Born- 510 BC-Died 428 BC All things have existed from the beginning. But origanally they existed in infintesimally small fragments of themselves, endless in number and inextricably combined. Literary Refereces: Anaxagroras appears as a character in the Ionia Sanction by Gary Corby.
  • Feb 19, 1473

    Nicolaus Copercicus

    Nicolaus Copercicus
    Nicoloaus Copernicus was a Renaissence mathmatecian and astronmer who formulateda heliocentric model of the universe which placed the sun rather than the Earth at the center. *Geocentric vs. Heliocentric: Geocentric was developed by Greek Philosphers and was the accepted model of the solar system for centuries.
    Heliocentric meant the sun centered gradually.
  • Dec 14, 1546

    Tycho Brahe

    Tycho Brahe
    Tycho Brahe- Born: December 14th, 1546,
    Died- October 24th, 1601 (Age 54 years)
    -Danish nobleman known for his accurate and comprehensive asrtrononmical and planetary observations. -The 1572 Supernova: On November 11th, 1572, Tycho observed (From Herrved Abbey) a very bright star now named SN 1572
  • Feb 15, 1564

    Galileo Galilei

    Galileo Galilei
    Born: Feburary 15th, 1564
    Died: January 8th, 1642 (Age 77 years) -Italian physicst, engineer, astronomer, and philsopher who played a major role in the scentfic revolution.
    His acheivements are improvements on the telescope and astrronimcal obsverations.
  • Dec 27, 1571

    Johannes Kepler

    Johannes Kepler
    Born: December 27th, 1571
    Died: November 15th, 1630 He was a German mathmatecian, astronamer, and astrologer. Supernova of 1604: On October 1604, a bright new evening star ( SN 1604) But Kepler did not believe it until he saw it for himself. Kepler's Laws: 1) The orbit of a planet is an elipse with the sun at one of 2 of the foci.
    2) A line segement joning a planet and the sun sweeps out.
    3.) The square of the orbiatal period of a planet is porpotional.

  • Sir Isaac Newton

    Sir Isaac Newton
    Born December 25th, 1642
    Died- March 20th, 1727 (84 years) -English Physcist and mathematican who is widely reconized as one of the most influential scientists of all time. Built the first refracting telescope.

  • Claudus Ptolemy

    Claudus Ptolemy
    Born- C. AD 90
    Died- C. AD 168 (Age 77-78 years) -Greco-Roman writer of Alexandria, known as a mathmaticain, astronamer, geographer, astrolger, and poet.

  • Hipparchus

    Hipparchus
    -Born C. 190 BC
    Died-120 BC -Greek astronamer, geographer. and mathematican of the Hellenstic Period. He is considered to be the founder of trigonmetry. But is most famous for his discovery of precession of the equinoxes.

  • Aristole

    Aristole
    Born 384 BCE
    Died 322 BCE (Age 62) The Five Elements:
    *Earth
    *Water
    *Air
    *Fire
    *Aether Motion-Aristotle deifned motion as the actuality of potenially.