astronomy

By lcrus747
  • 367 BCE

    Aristotle

    Aristotle
    planets move
    different from stars
    Geocentric model - Planets and stars revolve
    around Earth on spherical “shells”; Earth is the
    center of universe (Ptolemaic system)
  • 220 BCE

    The mariner's astrolabe

    The mariner's astrolabe
    also called sea astrolabe, was an inclinometer used to determine the latitude of a ship at sea by measuring the sun's noon altitude or the meridian altitude of a star of known declination
  • 167 BCE

    Hipparchus

    Hipparchus
    Wrote the first star and astronomical objects catalog . First to precession of equinoxes. Calculated distance from moon and earth.
  • 127

    Ptolemy

    Ptolemy
    Ptolemaic model the sun is the center of the universe
  • 1510

    Nicolaus Copernicus

    Nicolaus Copernicus
    Mathematician and Astronomer made the scientific
    Method.
  • 1546

    Tycho Brahe

    Tycho Brahe
    Known for accurate and comprehensive astronomical and planetary observations.
  • 1564

    Galileo Galilei

    Galileo Galilei
    Central figure in the transition from natural philosophy to modern science. Known for Kinematics, and fist Telescopes. Also sunspots.Discovered io, Callisto, and Europa
  • 1570

    Hans Lippershey

    Hans Lippershey
    Was a lens maker from Germany but moved to Netherlands . Believed to be first to apply for a patent for the telescope design
  • 1571

    Johannes Kepler

    Johannes Kepler
    Tycho Brahe’s assistant Discovered that the orbit

  • Giovanni Cassini

    Giovanni Cassini
    Italian who discovered the division of rings of saturn. 4 of saturn’s moons, and the rotation periods of Mars and Jupiter.

  • Sir Isaac Newton

    Sir Isaac Newton
    Further developed works for Copernicus and Kepler using math. Invented reflecting telescopes in 1668. 3 laws of motion.

  • William Herschel

    William Herschel
    Discovered the planet uranus and its moons. He may have discovered water on mars. In 1800’s He performed an experiment determining that temperature of different colors to the sun on a prism . He found out the colors were red,violet, and infrared. Wavelength=size

  • Percival Lowell

    Percival Lowell
    Discovered the planet Pluto and studied the “canals” on Mars. Built the Lowell observatory in flagstaff,AZ to study mars.

  • Ejnar Hertzsprung

    Ejnar Hertzsprung
    One of the inventors of the Hertzsprung_Russell diagram. The HR diagram shows the correlation between the absolute magnitude (brightness) and the spectral type of a star.

  • Albert Einstein

    Albert Einstein
    developed the theory of relativity, one of the two pillars of modern physics. And helped study everything from gravitational waves to Mercury's orbit.(1905)

  • Edwin Hubble

    Edwin Hubble
    Using the color of the stars, discovered the universe is expanding. Hubble’s law, galaxies are moving away from each other .

  • Karl Jansky

    Karl Jansky
    first discovered radio waves emanating from the Milky Way. He is considered one of the founding figures of radio astronomy.

  • Sputnik

    Sputnik
    Russian sent Sputnik into space which was the first satellite, this made the United States work harder which made NASA

  • Yuri Gagarin

    Yuri Gagarin
    First human (Soviet) to orbit Earth 108 minutes

  • John Glenn

    John Glenn
    1st U.S Citizen to orbit Earth 3X

  • The Apollo Missions

    The Apollo Missions
    Designed to land humans on earth. There were Apollo 11,12,13,14,15,16,and 17.7and 9 orbited earth. 8 and 10 orbited the moon. 13 tried to land on the Moon but failed due to malfunctions.

  • Neil Armstrong

    Neil Armstrong
    First human to land on the moon in the Apollo mission 11

  • Spacex Falcon Heavy

    Spacex Falcon Heavy
    Falcon Heavy is a partially reusable heavy-lift launch vehicle designed and manufactured by SpaceX. It is derived from the Falcon 9 vehicle and consists of a strengthened Falcon 9