ASTRONOMERS HAIKU DECK

ARISTOTLE (384-322 BCE)

• Aristotle thought that the Earth was the center of all things
• He did not think the Earth went sround the sun because the relative position of the stars would change

ARISTARCHUS (310-230 BCE)

• Aristarchus is reported to have created one of the first heliocentric models
• His idea was not widely accepted at the time
• Although the ratios were way off he demonstrated the use of observation and geometry

PTOLEMY (100-170)

• Ptolemy proposed that the objects orbiting earth did so in loops
• This helped predict the planets' location better than other previous models

COPERNICUS

• Copernicus developed a detailed heliocentric model backing off the ideas if Aristarchus
• The measurements matched up closer than they ever had
• Seen as the first modern model of our solar system

KEPLER (1571-1630)

• Kepler discovered the orbits are not perfect circles
• Kepler created a three part law
• 1. The orbits are elipses with the sun at the focus
• 2. Planets orbit faster when closer to the sun
• 3. The time it takes for a planet to orbit is related to the planet's distance from the sun

GALILEO (1564-1642)

• Galileo's approach was similar to the modern scientific method
• He proved that Earth was not the only object being orbeted
• He recognized that venus went through phases similar to the Earth's moon

NEWTON (1642-1727)

• Created a reflecting telascope
• Described the gravitational pull of objects

HUBBLE (1889-1953)

• Showed the velocity of the galaxy increasing
• Proved galaxy was expanding